1) Do not claim my work as your own. Pretty straightforward, but I'd like to discuss derivative deviations with regards to this clause.

I submit stock for other people to use, and I'm more than happy to share. I'm also more than happy to concede copyrights to any deviation that contains my work, but it has to be original.

A one-click desaturation will not cut it. On the flip side, special colour treatments are ok. Simple level adjustments won't cut it either, although you could use levels creatively, for instance to achieve a high key effect.

I can't list every type of acceptable modification, but I trust you get the drift. Creativity is key here, and although the term itself may be subjective, I basically don't want to see derivative works a monkey can be trained to do. Any such work is blatant violation of my copyrights.

2) You must credit me when my work has been used, in and out of dA.

You don't need to ask for my permission beforehand, but you do need to acknowledge the source in the end.

I would also like to be notified once your deviation has been made public. You don't need to write a novel like I am atm. A simple "Hi I used your stock here kthxbye" would do.

3) This clause is more of an exception to 2) and concerns commercial applications. Sometimes it isn't feasible to include credits, especially if you're running an ad campaign to sell a product or service. I understand that.

Under such circumstances, I forfeit the above credit requirements, but in exchange you need to give me a sample of your work. In addition, you implicitly grant me the right to display said commercial derivative in a personal portfolio, as part of a "What people did with my pictures" section.

However, please note that I would still respect your copyrights to that piece, and would in turn include due credit. I think this is only fair if you're fixing to make money off free stock imagery.

Regards,
Nick