Enhancing children's drawings

I have two pictures our children have done - one is a 'bear' drawn in the middle of an A3 sheet, the other is a mass of paint on A3 again which looks like fire if you quint your eyes. We'd like someone talented to 1) draw a fantasy cave/woods/etc background to the bear and 2) draw a dragon/dragon's head on the bottom right other one, breathing the fire out of its mouth. Random I know but happy to discuss - we have some thoughts but also happy to take direction! Pics attached - I'm hoping to send them in the post so you can add to them and return the originals.