Studio Series for C&C, please

Hi all -

I had a shoot with a traveling model earlier this week.  I had never worked with one before, but she had an amazing portfolio that really stood out as being different.  I booked her and a studio for an hour, and came out with quite a few shots that I really liked.

I have 12 images picked so far.  I would like C&C on both composition and cropping, lighting, and post-processing, if you would be so kind.

http://www.pbase.com/jayb/echo

If anyone is interested, these were all shot with a Pentax K-5 using the 35mm f/2.4 or the 16 - 45 f/4.0 lens.  Lighting was from either 1 or 2 Einstein 640's, one with a small (30" maybe) softbox, the other with a large 64" octo umbrella-type softbox.  I also used a gelled slave flash as a hair light for most shots, and alternated between orange and blue gels (I prefer the orange in retrospect).

Thank you for your feedback!

Jay