I'm sure it is within the rules to do a horizontal flip so the writing would be the right way round. The shadows and corners in the background seem accidental rather than deliberate, and take away from the 4 subjects. The photo is crying out for unsharp mask. I think the photo could do with a curves adjustment to increase the contrast without losing the shadow detail. 4
While I appreciate the fact that you are one of the few that knows what a still life photo is I think that your picture could have been a little clearer. It seems a little fuzzy and out of focus.
That is quite a collection of cameras there. Worked your way right up the ladder on them. The idea is good setting them in front a mirror and I'm curious to see which camera actually took the shot because if it was the large canon I would have to say I'm a bit disappointed. The noise and lack of focus in this shot ir really distracting to me, the light is well done and the way the camera grows is also very interesting. I started this at a 4 but am going to a 6
The fact that caonon is backwards is very distracting to me, not to mention that the camera looks relly weird in reverse. This could be a lefties best dream. Anyway, I like the idea but the tones seem to be really flat. Maybe some more contrast would have helped.