Nice photo. I really like the composition and the layout but if the focus was just a tad bit clearer in the magnifying glass then this would be about perfect.
Cool idea. Overall, this image is pretty good, but would benefit from better composition. Try recropping this photo to make use of the rule of 3rds - or maybe the rule or 3.14rds :) Yeah, OK, that wasn't funny at all, but I'm a dad, so I can get away with it.
Nice idea and well executed. I don't know if it would have been possible to get the magnifying glass more in focus as well, but that might have made this even stronger.