Your compositing is excellent. The most noteable composite is when the trooper asks luke how long he's had the droids. There is a little bit of noise present, but it is leaps and bounds beyond anything we've seen before. Great work.

You said you're still working on color correction and I just want to point out the most offensive scene in my mind. The SE shot where the speeder drives by the Rebel transport ship. The Speeder is very red, and C-3PO is a very yellow gold. I think that the whole scene needs to have the stauration pulled down.

Looking good!