A LITTLE SHADING

 

In case you don't want to do it in the most simple ways, you can be more thorough with it and start with some shading. Even though it takes more time, it's mostly worth it.

 

There are many ways to shade a drawing, but the easiest tools are "Airbrush tool", that gives you very soft edges, and "Pencil tool", if you wish to create hard-edged (often typical anime-style) colors. You can also combine several tools, for example use gradient tool, paint bucket tool, put some extra shading with airbrush tool, etc. etc.

 

This method requires more time and effort, but at the same time it gives a more clear and attractive outcome. And there are lots of ways to shade a drawing - this is a typical hard-edged coloring style, but you can also shade with soft edges etc. Just experiment a little and find out how you like to do it ^^