I wouldn't say your office is dirty. In fact, it looks very tidy, though the desk itself has a lot of character. It couldn't hurt to get the speakers on a pair of Auralex foam wedges to decouple them from the desktop, and it would help aim them at your ears for better coherence. It would be a low-cost tweak. Alternately, if you've got woodworking tools, I suppose you could make a pair of little wooden blocks to angle the speakers toward you, and overlay the contact surfaces with felt, and you'd accomplish most of the same effect.
