[1] Credit back is always appreciated but not necessary. So long as you don't claim anything taken, edited, made, drawn etc. by me as your own, we are good. If you do decide to credit back, please credit to this dA account or to my website poison-drop.net.
[2] A link to your work is also appreciated but again, not necessary. I love to look at my stocks manipulated into your creations. Also, I almost always favorite and/or comment.
[3] You may NOT redistribute them.
[4] That's it! These shouldn't be too hard to follow. Have fun and go crazy.