Help?!?!?!?!?

Okay so I'm no artist by any means. But I am doing a painting for my nieces birthday gift. And her bedroom theme is anything Disney. Well this is what I've got so far. But I'm lost as to what color to paint her name and what about the background?!?! I thought about making the castle sparkle? Any advise will be helpful. I know it's not the greatest so please do not judge!