I saw a few of these around, and thought it would be fun to do!
EDIT: I went through and added a few things!
Long side shaved hair
Short side shaved hair
Short hair
Flower crown
Hoodie
Yes:
Make slight line edits
Make new layers for the colors
Make your OCs
No:
Breaking any CS rules
Claiming lines as own
Note: My style contains all/most of the characters having very on point eyeliner. You can remove this if needed by erasing some on the 'two eyes' layer.
Have fun!