It's a bit too basic for this site, and the guitar neck and top part doesn't even match up with one another perfectly. It's a fun concept, but lots more needs to be added and perhaps brightened up and more thought put into the buildings and etc.
the clouds are fine but they should have the same blue otline as the city. having them as white make them stand out too much and not really fit in with the flow of the shirt. also I'd like to see them on either side of the guitar instead of obscuring the top of it. that being said, $4