I main thing, please do not always shoot from the same angle. I can see every girls with rather bigger face than normal due to the angle is shot from low to high. Normally photography attempts this by the purpose of showing something nice, for instance sky, cloud etc.

Don't you realise every model is trying to nod down her head but you still shoot from lower angle instead of eyes level or others. Even a little girl knows how to capture the nicest angle of a pretty face and I think you should learn more from them instead.