I guess, by way of a critique, I would ask one question - is the focus here *exactly* where you wanted it? With a subject like this, we have the opportunity to get the shot 'spot on' - and for *my* purposes, I'm not sure it's quite there... the black edge of the first key SHOWS as very visibly sharp, and I figure you've aimed at getting B2 in focus, but because of the angle and the limited depth of field, it isn't quite there... I'd be looking for a little more aperture, so the DOF takes in more of that key you're concentrating us on - yes, a little of the others will appear sharper, too, but the overall effect will be to make the impact of ONE stronger than the others...
Cheers,
Stuart