New Project - Arch of Constantine

I'm starting a new modeling/digi-matte project based on The Arch of Constantine. Here's a link to an image of it

http://www.padfield.com/italy/Rome_1/images/arch-of-constantine-1.JPG

I've completed the columns for it and here are some images of them. They are based on Corinthian columns. They were modeled entirely in Maya and rendered in Mental Ray. Comments/suggestions welcome.