You know i feel like DOF is a personal preference on shots like these. For example i think a lot of people would say that the first shot would be better with a larger DOF, but then again having a small DOF right in the middle of the shot hones your eye to one specific area. I think the first shot is really unique in that your eye finds the focal point and then has to figure out what its looking at. I really like it. As for the second shot, i don't care for it as much, I would have eliminated the lens cap and cloth? and just focused on the lens (which btw that lens will be the next camera-related purchase i get!). But hey just keep playing around with it and you'll find the shot you're looking for!