Very nice work!

That's a good start. I think the guy coming out needs a darker shader applied to him. Also, I'd put some ripples in the coffee since that dude's probably moving around.

Very nice model and render. You should get rid of the negative space on the sides and do a closer render.

Lovely image Elvis. Let's see some close-ups.

A slightly different version with my new purchase

I'd suggest adding a bit more reflection as well.

Made the head in Sculptris. Just added a color/spec and daylight system in Octane Render Demo. About 1 min cook time.

Very nice work. Should look excellent once you get it textured.

Looks like I missed smoothing the windshield material..

Here's a raw render with no HRDI.

I lowered the opacity of the windows a little..but didn't go TOO crazy since I didn't model the interior. Looks like I missed smoothing the windshield material...but it was just a test