Guinness Original Stout; Feedback Please!!

Did a somewhat quick render of my favorite beer… the labels came out good IMO and the glass is pretty good. The base lighting is nothing too complicated and the background is just a few planes…any suggestions to the bottles themselves would be great, I’m trying to perfect the glass some more. Included the render and a screenshot of then material. Image rendered at 500 cycles, 1080P. Thanks!