I would hate to do it as a service, mainly because most people don't have a clue. Any image I've ever been given to edit something out or change has been a low-res photo that's basically neigh on impossible to adjust or look better. This would then cause me to put in less effort and adopt the attitude have the attitude "Oh sod it, the photo sucks anyway, and it's a small crappy one - they're not going to care much anyway"