Cover Up Tattoo Stencil: Measuring, Mapping and Transferring

A cover-up stencil is harder than a normal one for a reason that has nothing to do with drawing: the skin is not blank. Every decision, from the size of the new design to where its darkest areas sit to which lines you even bother transferring, is set by an old tattoo you cannot remove from the canvas. The work starts with an accurate record of that old tattoo, and the stencil comes surprisingly late.

Photograph and measure the old tattoo first

The single most useful thing you can produce before a cover-up consultation is a photo of the old tattoo that you can measure from. Without one, every size you discuss is a guess.

1. Shoot flat-on. Hold the camera square to the skin, centered over the tattoo, at a distance where the whole piece fills most of the frame. An angled shot shortens one side of the design, and you will size the new work to a tattoo that is smaller than the real one.
2. Put a ruler in the frame, on the skin. A flexible tape or a plastic ruler laid against the skin next to the tattoo gives you a known length at the same depth as the ink. A ruler held above the arm sits closer to the lens and reads larger than it is.
3. Use soft, even light. Daylight from a window or a diffused lamp shows faded ink that a direct flash washes out, and it avoids a glare spot sitting on the part of the tattoo you most need to see.
4. Measure curved areas with a tape as well. A photo of a forearm or calf flattens a curved surface. Run a flexible tape across the widest and tallest points of the old tattoo along the skin and write the numbers down; those are the dimensions the stencil has to beat.
5. Take a wider shot too. One photo of the surrounding area shows how much clear skin you have on each side, which decides where the new design can grow.

Write the measured width and height on the consultation notes before anything else. From here on, you size the new design against those numbers, not against how big the old tattoo looks.

Map where the old ink is darkest

A cover-up works when the new design puts its heaviest, darkest areas over the old tattoo’s heaviest, darkest areas, and saves its open skin, light shading and fine detail for places where the old ink is thin or absent. That means you need a map of the old tattoo’s dark masses, not just its outline.

A practical way to make one is to treat the photo of the old tattoo as a stencil source. Crop the ruler out in your phone’s Photos app once you have noted the measurement, then load the photo into a stencil converter. In InkLine, the default Linework mode traces contours and keeps near-black areas as solid fills, which is close to exactly the map you want: solid where the old work is dense, outlined where it is thin. Faded areas may come through weakly or not at all, so open the photo guide while editing, which sits the original photo under the stencil at an adjustable opacity, and redraw anything the conversion missed. The reference overlay feature covers how that guide and the view-only Reference view work.

Then print the map at the old tattoo’s measured width, on plain paper. Because the width you type is the width of the drawn lines, a map of a 9 cm tattoo prints 9 cm wide. Lay a sketch of the new design over it on a light box or a bright window and you can see, at real size, which parts of the new work land on old ink. That paper overlay is the most honest coverage check available before the client is in the chair.

Size and shape the new design around the old one

General cover-up practice, which experienced artists vary in their own ways, follows a few principles:

• Go larger. A new design that is only as big as the old tattoo tends to leave old lines sitting at its edge, where they are hardest to hide. Planning the cover-up noticeably larger lets the old outline fall inside the new design’s busiest area.
• Go darker where it counts. Black, deep shading and saturated dark colors cover; light colors and open skin show what is underneath. Designs with dense texture, such as foliage, feathers, water, or heavy blackwork, give old lines somewhere to disappear.
• Break the old shape. A new design whose main lines run across the old tattoo’s lines, rather than parallel to them, makes the old shape harder to read through the new one.
• Keep open skin and fine lines off the old ink. Lettering, faces and delicate linework belong on clear skin wherever possible.

To test the size against the client, print a multi-size sheet. InkLine puts four copies on one page at 100, 95, 88 and 80 percent; set the largest size you would consider as the 100 percent copy and hold each one over the old tattoo. The copies are not labelled on the sheet, so mark them in pen before you cut them apart.

Large cover-ups often outgrow one sheet. InkLine’s print layout can tile a stencil across up to 3 × 3 sheets, with a 15 mm overlap and registration marks on every shared seam, which is covered under multi-page stencil tiling. Tiling solves paper size, not coverage; the overlay check above still comes first.

Transferring over old ink

This is where cover-up stencils differ most from ordinary ones. Stencil transfer ink is usually purple, and purple has very little contrast against healed black or dark blue. Over solid old work a perfectly applied stencil line can be close to invisible.

Artists commonly work around that in a few ways:

• Put the essential lines on clear skin. The outer perimeter of the new design and a handful of landmark lines usually sit on untouched skin, where the stencil reads normally. Those lines lock the placement.
• Simplify the stencil itself. A cover-up stencil often carries only the outer shape and the main structural lines, with interior detail left off, because detail transferred over dense ink will not be legible anyway.
• Draw the rest by hand. Over dense old work, many artists switch to a skin marker or freehand the shading and texture, using the stencilled landmarks as the frame.
• Check before the needle starts. Look at the transferred stencil from several angles and under the work light. If you cannot follow a line over the old ink, it is better to redraw it with a marker now than to discover it halfway through.

When to bring in a specialist, or wait

Cover-ups are a craft of their own, and an artist with a portfolio of healed cover-up work will see things in an old tattoo that a photo does not show: how far the old lines have spread, how the pigment has settled, and which colors will grey out over it. If you are a client, choose your artist on that portfolio. If you are an artist new to cover-ups, a second opinion from someone who does them regularly is cheap insurance.

Some old tattoos are too dark, too large or too close to where the client wants open skin for a straightforward cover-up. In those cases a few laser sessions to fade the old work first are one route some clients take, and it can widen the range of designs that will cover. Whether that suits a particular tattoo and a particular person is a question for the client, the artist and a laser provider together.

On tooling: InkLine is a free download, and its manual stencil workflow, covering processing, editing, print layout and export, is free up to an allowance on how many images you carry through it and needs a subscription past that. AI generation uses credits. For a cover-up that means at least two images, the old tattoo’s map and the new design, so plan the session around both.

What this cannot fix

• InkLine cannot place a design on a photo of your client's body or over their old tattoo. To check coverage, export the new stencil as a PNG with a transparent background and layer it over the photo of the old tattoo in another app.
• The on-skin preview is an AI-generated image of the design on a generic body part, chosen from ten placements. It is not the client's arm, it does not show the old tattoo underneath, and it says nothing about how old ink will show through new work.
• No app can tell you whether a design will actually hide the old tattoo. Ink density, healed color and how much the old lines have spread are judged by eye, in person, by an artist with cover-up experience.
• Converting a photo of faded or blurred old ink can drop the palest parts of it. The map you print is only as complete as the contrast in the photo, so check it against the skin before you design around it.