Thanks for all the comments!
As far as the weathering on the upper saucer, I deliberately went with a subtle approach.
You don't want to overdo the staining on a model only 11" long.
You can see the stains better in this pic taken prior to decaling:
I made some more images where I used the editing tools on Photobucket to make the ship appear grainier.
More like the original images seen on TV.
I don''t claim to be an expert at this so please bear that in mind with any critiques you may care to offer...
Here's a series of stills from an episode never seen in the original series. I call it "Kirk's bad day" or "What to do when your weapons are out of commission":
The Klingon D-7 shown above is from the old AMT Space Ship Set.
I'm honored that the membership here thinks enough of my work to offer comments and advise.
I've been very impressed by the depth of understanding and thought exhibited by all of you in the posts I've read on this forum.