I doubt that if you saw the George drawing somewhere else without seeing his name, you would've known it was George. His eyebrows are kind of bigger than the other's in the drawings, but John's eyebrows were big as well, so it doesn't necessarily mean that if he had big eyebrows he was George.
I'll say it again, her drawings are better than other Beatles drawings I've seen, but it depends on what you consider to be a decent drawing, what I consider to be a decent drawing and what others consider to be a decent drawing. Nevertheless, they don't look bad.