I have a very simple rules when it comes to my art and works:
1) Ask before you take
2) Credit me
3) Don't sell my resource packs as they are intended to be freeware
Bonus Stage: If you see questionable use of my works, please report it directly to me via dA notes, tumblr private message or email. I'll deal with it personally if it's necessary.
Thanks for considering my feelings and the hours of my life that went into making stuff. ♥