I liked the look of the nice,foamy head on shot #3, but I thought the camera was positioned too high. The overflow of the foam onto the paper gave a bit of action, but really the "setting" is just too plain...it's white paper right? It just doesn't feel "real" enough for a complete still life feel.
I also think the mug itself is working against you,especially in shots 1 and 2, where the mug caused light refraction at the bottom let, and also caused some dark,black areas to show. In shot #3, I think it would have been good to use a small reflector taped to the underside of the mug, to get rid of that black bottomed look. Liquor and beverage photography is very difficult, and depends on highlight and reflection control, and also upon a lot of small reflectors hidden behind the glass or bottle,or taped to the bottle or glass itself. But you also need a bit of a scene, like say a tablecloth or a wooden table,and a sandwich or another item to go with the beer; even a bottle cap would add another element. Heck, even the remaining five bottles of beer in their 6-pack cardboard carrier would add another dimension to this shot,even if it were still just shot on seamless.