I’m not sure how accurate some of the characterizations are (like Chewbacca for example) but I definitely have to give this group of steampunkers at the 2009 Dragon*Con some high fives on the efforts.

Here is the character breakdown according to their deviantART page:

Characters from left to right, back to front: Chewbacca, Mara Jade, Luke Skywalker, Darth Vader, Boba Fett, Princess Leia Organa, Aurra Sing, Han Solo, Queen Amidala, Slave Leia, Padme Amidala

via Geek Tyrant