Page 108 Coloring Step by Step (Patreon)

Lots of layers on this page. The first picture is the flat color and blush. There are three active layers for the flat color here - on the bottom, the flat color, above that, the blush, and above that, the eye color, so the blush doesn't overlap the eyes. It makes it easier to draw the blush on this way.

Next, I put a purplish layer over the flat color at 30% opacity to dim the colors.

On top of that, I did a gradient layer of dark blue to hot pink at 25% opacity.Image 4 is the shading.

And lastly, image 5 is the highlight! It's time consuming, but pretty easy in terms of technique.