I agree that the nose is quite square but the angle is rounded. The highlight on your profile seems a bit too harsh IMHO. It's not by much, but requires correction I think. However, it's your profile and your style, so if you want to keep it like that, it's fine with me.
Cc. the stencils, I don't know of any specific stenciling for serials or tactical numbers. I'd just study the photographs.