If your cat is scratching out of aggression, then removing her claws will not even be addressing the underlying cause of the behavior. (catbehaviorassociates.com)
After you have your Do want, just scratch out your Don't wants. (remonline.com)
It's absolutely vital to let the painting completely dry before scratching out, otherwise you'll almost certainly drag out much more paper than you intended, quite possibly ruining the whole picture. (arttutor.com)