Hi Darko,
The wrinkles are very good. I would comment on the knee pads. I think yours are a little too squared off, they should be more oval shaped. Also, yours appear to have the top of the boot running behind the pad, like the pad sits on top of the boot. In the photos, it appears to me the boot top curves up and around the top of the pad, with the pad set into the material of the boot. Still, if you wanted to leave yours as is, it wouldn't detract from the overall figure. That is some of the smoothest sculpted anatomy I have seen on a figure, just great stuff.
Cheers
Jason
Cheers
Jason