Herr Klaus

All good stuff. However some crit...

The tank looks very good but I think the bump could be toned down a little, it looks like it has had brake fluid poured on it right now. I think some areas could be smoother. When doing bump maps try and get the best references possible, not all surfaces are as bumpy as people think.

The head: The edgeloops are fine, but I think they are a little too stretched, especially around the mouth. Just bring them in a bit then that will be fine.

Also the nose: Theres an odd looking 4 sided 'tri' that you could lose toward the front of the nostril, then just rework that a bit to stop the polys bunching. The nose is a bit of a tricky area to uv so bear that in mind.

Otherwise again good work

Cheers
Jay