No, creation is taking something that does not exist and bringing it into life. The characters existed for the actors. The music existed for the musician. The painter is creating something new.
The character existed on paper. The actual character, including the way he would walk, his vocal cadence, was not there, and is something the actor needs to find. If it really was just basically copying something that existed, then you would expect that anybody could walk onto a film set and take over for an actor and do an equally fine job. Same with music. It takes artistic talent to be able to inhabit a role or interpret a piece of music successfully.
As for a painter, what if he is painting a scene that exists before him? Couldn't it be argued that he isn't creating something since he's just copying it down with paint? Ooh! And wouldn't he also have to - gasp! - interpret the scene to determine how best to paint it? How literal to translate the scene, which color palette to use, what kind of style, etc?
Give it up, screwtape.