This helps me a lot. Normally I just use dA's stock. Also, colored pictures (sepia, black and white, etc.) aren't goo for much use either. They CAN be helpful but it's better to find pure, uncolored images.
pretty basic tutorial but handy for anyone starting out, thanks very much! I think your an amazing artist/photographer, you are actually a big inspiration to me and one of the reasons I started a deviantart page and kept going with my photography, thankyou