How to Color Eyes

This is just one way to color eyes - and usually how I do it, step by step.

I start off with the finished sketched eye as a black and white line drawing. From there, I place some color in the iris of the eye, and slowly build light and shadows into it. The make up I do last.

In Photoshop, you can actually use the Dodge and Burn tools to darken and lighten up places on the eye, which is what I did in this illustration.