Building a Millenium Falcon

My cousin is a Star Wars fanatic.For his B-day I'm building him a ROTJ era MF.
So far it is looking good.I based it with a spray of flat gull gray.I painted a few panels a darker shade of gray and a few more a rust color.I then used Citadel Black Wash to shade and darken the model overall.I plan on doing a little dry-brushing with white for highlites.As long as you are at least a foot away you can't see the screw ups with the wash.(Too heavy in some places,obvious brush strokes in others).I'm quite happy with the build so far.The only reason my cousin is getting this one is because..............there is another!
Can you guys give me any pointers or ideas to clean it up or improve upon it?

Thanks

Easterntiger