Doesn't look too bad as is. Pics 1, 4 and 5 are really good. Kind of loses it with pics 2 and 3. IMHO the top os his head juts out far too much. Needs to be sanded (dremeled) back a lot. Also, might help a bit if you build up has cheekbones. Don't forget to removed the electrodes! This is just my opinion and hope others can jump in and give theirs. Good Luck!
Dont know if this will help but its my post to my 12" EOF Custom figure here on UMA. I think the likeness is good so it may show some pointershttp://www.universalmonsterarmy.com/forum/index.php?topic=14870.msg238418#msg238418