Finally done, as I mentioned somwhere, it's my last traditional clay sculpt at least for some time. Now I will focus on digital sculpting, for it gives you many tools unavailable in real world that make the process much faster and easier. Also since 3D printing continues to getting both more accurate and cheaper, printing those as miniatures shouldn't be a problem. Anyway, he's standard primarch size, I hope you like him, c&c most welcome :)
Alternative heads:
Aaaand in parts: