Looks awesome Juan. Great build up.
Just a couple of minor points. I would trim out the eyes a little more. The eye sockets on the JoeR moulds are a little bit small IMHO anyway, so I think you need to remove any excess and get them as big as possible. If you look at the original helmets they have huge eye sockets, same goes on ANH & ESB, a lot of the replica versions eyes are much too small.
Also there are lots of different sizes of frowns on original helmets, but I would go up a mm or two on the top edge of the frown. The far right end of the right had edge looks a little square. I think Caleb absolutely nailed the frown on his build up, as far the generic ROTJ frown looks.
I am no expert at all but these two things will make it look closer to an original in my opinion. I love the glue residue on the inside, great touch! :-)
JoeR