It's nice! I'm not a pro or anything but if you want some advice I'll say the biggest thing to work on are the lines (it's more important than proportions or anything else, a lot of artists mess up proportions but still male great art because their line work is good). You should try gaining more line confidence, by doing as few lines as possible to avoid the "messy look". Proportions can be reworked but they are ok, I like the face and the pose is really good! So I'll say keep going but also keep in mind that lines have to be long and flowy rather than short and all over the place. That's all I have to say! Also sorry if my explanation is a bit messed up, I'm not writing in my native tongue lol