The face looks proportional and I really like the shading of the cheeks as it gives the face a lot more depth! The left side of the hair looks good; I like how it’s colored darker than the closer right side, again it helps with perspective. The right side looks off to me for some reason, but I can’t quite put my finger on it, sorry. It looks like you’re still working on your linework, and I don’t have much useful advice there; it’s something I struggle with too.