You might think I'm crazy but I don't know how to credit someone, not even on my signature. Well I'm still kinda new so I don't know everything about dA.
You have to go to your settings, and there'll be the signature box, and you just write something like "icon made by pikoreto" or whoever made the icon c:
However, you don't have to credit me if you don't want to, I don't mind <3