I need help in V-RAY! thanks

Hello people,
I’m trying to perfect my rendering skills on v-Ray and here are the problems:

I think this one is not bad but maybe you could help me on this too:

The whole project is here (a new Champagne experience for RUINART, the oldest french Champagne house)
http://www.coroflot.com/adogbeh/champagne-RUINART-

What you think?

Thanks for your attention!