1. Notify Me
I'm not that protective of how my images are used but I want to see them when you get done. This is just to satisfy my own curiosity and to let others see how the same image is used. I prefer comments on the page of the stock you used.
2. Credit Me
If you posted the image to deviantart you must add a link back to the original image on my account in your modified image's description.
3. Modify; Don't Steal
Stock in this account may not be redestributed as-is as stock. You may use it in pre-made backgrounds as long as it has been noticeably manipulated.
4. Some Commercial Use May Be Okay
As long as the other rules are followed I personally don't mind this stock being used for prints, commercially or off-site (as long you have a deviantart account and I'm notified).
If you are using stock commercially be aware that subjects in the photos might have restrictions and you may need to obtain permission beyond what I'm able to give. For example, some properties have restrictions on photos being used commercially without permission. If I am aware of subjects having very strict policies about photos I don't upload them to this account. However, I'm not doing this for commercial purposes myself and I'm not uploading photos specifically to be used commercially, so I don't have the motivation to check every photo. It's your responsibility to make sure you aren't violating any copyrights.