I think the arm is a bit thin, but this is such an adorable picture!! I am in love with the way you did the hair and clothes *o* I've never watched the series, might have to give it a go now! <333 Great work!!!
Your coloring is very nice and everything, I can see how you're trying to have a cute loli girl but... To be honest, it's a bit too big. (vertically) As mentioned, her forehead would have to be inhumanly large. (Imagine her without the bangs)