Font choice is bad, you should include some newer fonts and play around with typography
Typography feels bad, like empty and unfinished. And look at margins, for example on menu bar – top margin and bottom are not equal, and it looks bad.
And it may sound not worth doing, but trust me – get better photos – http://www.flickr.com/search/?q=bokeh&l=cc&ct=0&mt=all&adv=1
http://impactweb.pl/trolo.jpg – I’ve changet it a little with firebug. And also – bottom images ‘sale’ ‘free shiping’ – completly dont fit this design. Your desing is in my opinion flat and simply. So I think one color background, with maybe REALLY soft gradient and no shadows.
Hope I’ve helped at least a little.
I would consider overall smaller main slider.