Looks good. Here is the rubies latex crap that I tried shining up:
http://www.thedentedhelmet.com/showthread.php?t=6298&highlight=ugly+bucket
It also looks like you had the same problems shaping it up that I had
1) There is a squished area right above the ears that won't stay pushed out.
2) Its impossible to keep the dome from flattening.
Rubies really are a lot of work, and it still amazes me that Lucas lets these crappy things be made.
All in all though, cheers for a job well done!