Very subtly lit, with the black background proving a good choice to show off her lovely curves.
One small niggle,though - there's a distracting diagonal line cutting across the left third of the image.Easily resolved though.

I 'm with Redstag here. Also, you've left a light stand leg in the image. Have uploaded a couple of mods adding in some negative space.
Colin

Great make up and pose - the blues are very striking. The picture though as you've pointed out, is let down by the dirty and creased background.
If its not possible to sort before you begin shooting, the a bit of manip is always possible.
I'm no expert and there are many different approaches, but the simplest that I know is to paint over any flaws like this (see my mod) One of the difficulties you have in this image is the fact that the lighting is unevenly spread cross the image from light grey to white. A simply used the colour selector (ink dropper) and then did my best to blend into the rest of the colours.
You could also try using layers and pushing up the curves to 'white out' the background and then erase the rest of the background to reveal the original image, but it needs a fair bit of patience, something that I lack.
Hope this helps, although I'm sure others will offer much more constructive and effective methods.
Colin