YOU MAY

Redesign the character as much as you like

regift free design (but only regift,no resale)

use the design however you please, and make sure to keep my credit

Trade this character offsite as long that I, the designer, am credited and aware.

Make personal merchandise of the character.

 
YOU MAY NOT

resale for more than you paid without extra art! (paid or personal idc)

hide the designs from me(I wanna see how they are doing :3)

claim my designs as your own

use for commercial use without consulting me first

WHITEWASH/LIGHTEN MY CHARACTER DESIGNS 

this would lead to an instant blacklist.