I agree with the comments above that the drums are a bit distant sounding and the lead guitar a little loud, but mix-wise that's about it for me. I did like the lyrics - then again I usually do! As for the vocals themselves, I'm with Bill - I can't decide if I like the doubling or if it's distracting. Or maybe it's both, depending on the line/phrasing...
Just curious - have you tried singing in a higher or lower register? I know you do have a naturally breathy voice, I'm just wondering if you could get more of that Bing Thing going if singing outside your comfort zone. Just a thought.