Thanks, Achoo - thanks Post - thanks everyone who left comments.
Sorry about the lack of comment from my side, dr A, I realised it only too late to help you out.
'Ghost Writer' would probably have been enough for the title. It might have been an idea to leave the jacket open in order to demonstrate that there's no one in it.
I think I had a 'Pirates of the Carribean' thing going through my head when I was shooting. Should have made a hook for the other hand...
I think the technicals are all here on this shot. Perhaps I would have experimented with either some more saturation and/or contrast, but probably not a lot and I don't think that's going to suddenly vault you to a 6.
The picture was probably limited by the viewer having some difficulty answering the question as to what you are trying to convey or why you did this shot. The title sounds cool, but doesn't help me either. There are some shots which work in a "how'd he do that?" sense without making much sense otherwise, but this isn't one of them. I don't have other insight into what you were going for because you didn't leave any comments.
Nice concept but the fact that the hand isn't grasping the pen hurts the execution of the concept. I would also try a slightly different angle to eliminate the empty sleeve in the mirror.