This is an eye coloring page. It is very easy to colorize the eye, although it may not seem so.
But the trick is that there are a huge number of options for how to color the eye. The pupil itself can be painted either green, as in our example, either brown or blue. But of course, there are many other colors, more unusual. For example, there are red pupils or completely black.
In addition to the pupil, you need to color the skin, which can also be any color, from almost white to almost black. Some shadows and highlights will make the eye more voluminous and beautiful.