Its not like you found those pics on Google and then posted the originals on the web, claiming them as your's. If you just looked at it for reference, and then drew your own, looking at it, I don't see how that's wrong. You could have taken pictures off of Disney's website and looked at them for reference to draw your own, and I don't think there would be anything wrong with that. Unless you took the original drawing and claimed it as your own, I don't see how this could be a problem.