It's funny you mention Mace being at the bottom, I tried him in several places and he just did not fit. I know he's all alone there, but other places spoiled the composition a bit. It's hard to take someone else's original work and change it without totally ruining the balance - like the Lucasfilm publicity people did with Drew Struzan's original Episode III poster, putting that oversized Vader behind the painting. Ugh. But I had to change that horrible head dress that Padme was wearing for something more attractive.

They're not quite finished, but just about.