I used the new velvet material here for the surface the bottle is sitting on in the top image, the lower is just the default matte materiel. The velvet seems to effect the lighting in the bottle considerably!
What I don't understand at all is the shadow coming from the right more than half way across the picture? Something to do with the pile (?) or fluffiness of the material?
(The bottle here needs to be remodeled -lettering and cap as well).