Nice modelling guy. I would increase the quality in the Yafray settings. Some caustic light may also improve the result. Try to use HDRI, it will give a more realistic result.
Thanks for the comment enricoceric, im already using hdri, method full quality high with raydepth at 20 and precision at 3 and photons at 400000, i`ll add a photon lamp to see if that improve the caustics
Looks realy nice. I miss a lable on it though!
There`s no label since the client only produces the bottles :|, i also wanted a label in there
Great result. love the caustics