Being close in and filling the frame with your subject works nicely here. I could see crpping even a bit more on top and bottom. I'm not sure I'd really call this macro, but I do some nice details in the subject. It would be more subtle and interesting with less harsh light - a gray day instead of bright sunshine.
this subject has a lot of potential. you just need to catch it at the right time of day. also try it from different angles (i bet she has a cute face).