super quick tip: stop erasing, use a mask insteadApril 13, 2007
When your trying to edit a picture with Photoshop, before doing anything, duplicate the layer to preserve the original copy. Then when your ready to edit the duplicate, use a mask:
found at the bottom of the layers palette to erase any unwanted pixels. This way while your adding your’re effects and whatnot’s, you’ll have the original as well as a copy that hasn’t been erased.