Jewelry Business

I have tried many online business in the past few years and none have been very successful or profitable.  My newest is making custom made swarovski crystal jewelry.  I have made quite a few items and even this time around have a website.  The jewelry is truly beautiful but I have not had any customers.  It is rather depressing.  The site is www.diamondeffects.com – I need advice and help on how to make this site better and how to become a powerseller because the ebay thing wasn’t working for me either!