The conditions of use of my stock are pretty simple;
1. Don’t use it in a manner likely to cause offence.
2. Don’t claim any of my unaltered stock as your own.
Yes, my stock can be used outside of dA, either in a private or professional capacity, and may also be used to make up pre-made backgrounds providing it has been considerably altered from the existing image. Just adding a filter, desaturating, or changing the colours of my original image is not an acceptable alteration.