I gave it a go. It's a WiP, and it's still missing some things such as the mouth, and I'm going to fix the back of the head too, and maybe add a little more shading. Please tell me what you think.
I might as well throw my hat into the ring out of bordem and lack of practice.
I normally don't like showing such early sketches, but figuring as i wasn't sure on the expression, you can decide whether or not you'd like it to remain as is, or changed: