Displaying your work on CMON always helps as well.
You can always refer people to the image. The score and comments are also important, but not as much as you might think. If you are producing the sort of stuff people want, they will be happy enough with that.
EDIT: I have just been over and looked at your site. It is very slick and professional, far better than most. However, there is just not enough of your own stuff on it. Your rates are very reasonable, but people have no real idea of what they might be getting. The \'For Sale\' section does not appear to have changed since the last time I looked, which was ages ago. Perhaps you need to start painting speculatively and build up a customer base that way.