I think airbrushing should really only be used to remove blemishes. Can't stand the way it's used to reshape bodies.
It took me ages to realise that a lot of the pictures of what appeared to be impossible slim models, were impossibly thin, and they had in fact airbrushed out the visible ribs!! I actually believed it was possible to be that slim without being badly underweight.
Airbrushing like they do now, removes a lot of things that are totally natural, leading to thinking that bodies are in some way wrong. I've seen pictures where women are sat down, without any creasing to the stomach. Is that possible? In a photoshopped world, yes.