The camera is a bit too high up in shot #1, and it would be nice to have some light reflected back into that dark beer bottle. Try taping a piece of trimmed,white cardboard right onto the back side of the bottle, or even a silvery foil-like material, to get some light bouncing back and around inside the beer bottle. Many beer and wine photos use reflectors right on the back side of the bottles. The foval length of the lens is too short, causing the "shoulder" area of the bottle to look larger than the middle/bottom areas...your lens is distorting the bottle....you need a longer focal length, from farther back.
On the Adidas cologne shot, again, the camera's point of view is a tad bit too high, looking down on the bottle, making it look less-than-dominant. Also, the white balance and color tint both look off...the pinkish hues are kind of feminine...not a good product shot...also, these need some kind of props to augment the shots...like the beer on black...it needs a pilsner glass, or a mug, or a glass and a sandwich..and OPEN the cap!!!! Even putting the cap into the shot would help.