Credit:
Credit my Toyhou.se. If it's a character, it doesn't have to be every time the character is mentioned, just somewhere in their storage/main page.
Links preferred but not required.
Don't pass the design/art off as your own.
Other:
Make whatever changes you want. Go nuts.
Reselling characters is fine, just don't sell a design for more than you got it for unless you've added art.
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