YES
You can use my stocks as drawing and/or painting reference, and strictly for those purposes ONLY.
You must credit me if you used my photos as your reference. (Even if you used a part of my photo)
[If you post your artwork outside deviant art, you do not have to credit me but it's always appreciated]
NO
You can not use my stocks for photo manipulation.
You can not re-post or redistribute my original stock.
You can not claim my photos as your own.
If you are unsure, please ask before you use.
donation is not required, but appreciated =)
check out my art : http://stellayang.deviantart.com/