Pretty cool! I am particularly fond of the photo; very artistic.
If I might make one recommendation, "justfy" the vertical text on both sides so that it makes a visually-pleasing block of text rather than leaving one jagged edge. It's not so bad on the left as it is on the right.
Do you think you want a place to write the name/style of the beer? I know I couldn't keep track of batch numbers in my head (but I shouldn't project that onto you!).
A pal of mine years ago had an acquaintance at a print shop run him something like 15,000 self-adhesive labels remarkably like yours: Chris had a white block on the label he'd fill in with a Sharpie. They were those glossy, thick labels that are such a bitch to get off, so he didn't bother - he just stuck the new one over the old and got over it! ;-)
I still contemplate that route. But the glossy, thick self-adhesives are bloody expensive...
Bob