I agree with Fredweena, et al. I know it's almost a requirement to do model poses-it keeps one's vision lucid, helps with proportional exercises, etc. If you are to hawk your work, leave those out; just keep doing them for the 'practice'(like you need practice).
What's so fantastic about your work is, beyond any technical applications, is the desire of the onlooker to keep looking, finding new details to intrigue and keep the eyes glued.
Your best work are those not in color-the colors don't enhance the otherwise beautiful lines. And that blue model....how'd you see me sitting there??
I would love to show your work to the gallery owner I deal with. Hm...I do have that piece here at home....
A suggestion to get this stuff out there: Check around the galleries and art associations(everything you can reasonably drive to) and see if there are juried shows for you to enter. Join every art association you can, too. Put yourself on mailing lists for these places so you know everything that's coming up. Join any free artists sites you see, even those that have 'trial periods', like Yetty or ArtPromote.
Consider places like Cafepress, where you can start a store free of charge and put things on shirts, mugs, posters, etc.