The first problem is i think the color of the walls. Why is tha left wall yellow?

You should create with line tool a cable at least for the keyboard.

Your edges are too sharp, always use on it chamfer tool, 1 cm 2 segments.

The lights are ok, but the textures has no reflections.

congratulations!

Good work, and nice reflection for the ice.
Needs more work for the enviroment..
GL author

Very realistic, great concept author.

You spend just enough time to come up with a rough sketch, but lack finishing it. This could turn out interesting, but right now, there are too many rough parts for me to judge it well. Take your time, work out the details, and finish it...you will be much more happy with the results.

very good job

Fantastic detail.

That would be awesome!

Wow, some really nice modeling. Good work!

Congrats!!

Illustrations not created by yourself can't be used. See http://www.pxleyes.com/guidelines/photoshop/
5.7. 3D Renders or Illustrations as Source: Using other people's 3D renders or illustrations (even with permission and no matter in which form they are offered) creates a false impression of your artwork. So 3D renders or illustrations (this includes brushes, tubes, clipart, pdf files) can not be used as sources, unless they are entirely created by yourself.

Why blur the background when it's not blurred in the source image?

I like it but feel as if the shadows should've been worked on a bit to match the rest of the image. The DOF here is a little sketchy as well... Otherwise clever!

This is good. http://www.flickr.com/photos/arancidamoeba/3421129195/

Good job author, I just want to pick up a couple of points with you. The string or strap looks kind of fuzzy, the lighting on the rest of the model is great, but somehow the light doesn't pick up the fuzzy bits on the straps. In other words all those little fuzzy bits would cast shadows themselves. But they don't. I love the texture of the table/wood top, nicely displaced and lit. overall good job author just a couple of things need correcting.

Nice -- maybe some softening of the edges of the cow , head dress and neck piece

Author, you need to post a link to each source you use to show they are public domain or creative commons images, and not copyrighted. Please read http://www.pxleyes.com/blog/2009/06/how-and-where-to-find-legal-source-images/
The link you posted doesn't lead to an image.

Post working source links.

very simpatic. bravo