How to Choose the Best Portrait Photo for Paint by Numbers

A portrait is the hardest thing to get right in paint by numbers and the most rewarding when you do. A face is something we all read instantly, so small mistakes — dead eyes, muddy skin, a flattened expression — jump out in a way they never would on a landscape. The good news is that almost all of it comes down to the photo, and portraits reward a few specific choices. This guide is about those choices: the eyes, the light, the crop, and how much detail a face actually needs.

The eyes decide everything

In a portrait, the eyes are the painting. If they’re sharp and catch a little light, the whole face comes alive; if they’re soft or in shadow, no amount of careful painting elsewhere will rescue it. So before anything else, check the eyes at full size: are they in crisp focus, and is there a small bright catchlight — the reflection of a window or the sky — in each one? That tiny spark is what makes a portrait feel awake rather than glassy.

The eyes also need to be physically big enough in the frame to survive being turned into flat regions of colour. A face that fills a good part of the picture keeps its eyes, lashes and lips as paintable shapes. A person standing across a room becomes a blur of a head — the features simply have nowhere to land.

Light a face gently, not harshly

Faces look best in soft, slightly directional light — the kind you get near a large window, or outdoors in open shade. That light wraps around the face, shapes the cheeks and nose, and keeps skin an even tone the converter can group cleanly. What you want to avoid is anything that breaks the face into extremes.

Overhead and midday sun is the usual culprit: it drops the eyes into dark sockets and carves a hard shadow under the nose, and the converter paints exactly those shadows. If that’s all you have, a gentle lift to the shadows in your phone’s editor before converting can open the eyes back up.

Crop in tight — one person, head and shoulders

The strongest portraits are simple: one person, framed from roughly the chest up, filling the frame. That way every colour the converter has to spend lands on the face instead of being spread across a room, a full body, and a busy background. If your favourite photo is a wider shot, crop it down before you upload — a tight crop of a good photo beats a loose one every time.

Group photos are the classic trap. Five faces share the same palette, so each one gets a fifth of the detail and none of them look sharp. If you love a group shot, the fix is to crop out a single person and convert them on their own — you can always make one painting per face. Busy backgrounds aren’t fatal on their own; the converter calms them into simple blocks. They just shouldn’t compete with the face for attention.

Keep skin real — go easy on filters

Beauty filters and heavy smoothing are working against you here. They erase the very tonal transitions — the gentle shift from cheek to jaw, the shading around the eyes — that give a painted face its form. A “perfected” selfie often converts into a flat mask, because there’s nothing left for the palette to describe. A natural, unfiltered photo with real skin texture and a genuine expression always makes a warmer, more recognisable portrait.

How much detail a face needs

Portraits sit in the middle of the detail range. Too few colours and the face goes flat and mask-like; too many and you’re painting dozens of near-identical skin tones that add hours without adding likeness. A moderate detail level usually captures a face best — enough tones to round the cheeks and set the eyes, without turning every faint shadow into its own tiny region. Let the photo lead: a soft, evenly lit face needs fewer colours than a dramatic, high-contrast one.

We go deep on this trade-off — what each detail level does to the paint and the time — in How color count changes difficulty. And remember you don’t pick the colours yourself: Wabihana reads the real skin, hair and eye tones in your photo and builds the palette from them, which is exactly why a well-lit, unfiltered face produces a richer, truer set of paints.

A quick portrait checklist

• Eyes: sharp, open, and each with a catchlight?
• Light: soft and even, no flash or hard overhead sun?
• Crop: one person, head-and-shoulders, filling the frame?
• Skin: natural and unfiltered, with real texture?
• Size: the face large enough to hold its features at full resolution?

This is the portrait-focused companion to our general guide to choosing the perfect photo, which covers light, resolution and subject for any picture. If your subject has four legs, the pet portrait guide covers the extra tricks dark fur and animal eyes need. When you’re ready, turn your photo into a paint-by-numbers and see the face come together number by number.