http://artistwebsites.com/tourartistwebsites/visitor-tracking.html
Heather is right. You can get some Google Analytics data on your premium artistwebsites.com subdomain site only (if you have one) and no Google Analytics data for traffic directly on pixels.com or fineartamerica.com profile or pages. Some folks here have had limited success installing some visitor tracking code on their bio (to get a little data on the non-premium website), however that only applies to pages where your bio is shown, which leaves a most pages with no tracking. You do get a visitor count per image, with the location of your last viewer. That number isn't always accurate, but it can be used as a general guide to the popularity of an image.
Good luck!