Nice character design here. You are not far off. A little perspective Correction and I think it all works. Think about the sphere form and where the centerline would b. This will dictate where the bottom of the nose needs to fall. I think with a little size adjustment with the nose makes the perspective work. I would suggest completely covering the eye area with hair if you don’t want to put in a second eye. This makes it a bit more believable. Adding shadows to the shadow side can help with volume and believability as well. Hope this gives you some ideas to practice.