Hi and thanks for coming by the forum!
I'll talk a closer look at the site later, but wanted to give some intial feedback--
One thing I always like to ask when someone posts here is if there are any issues you are presently having-- this way when we make suggestions we can show how they may overcome them. Is it coversions, traffic, etc?
I like the product pictures in the header- it clearly communicates what you do. However, I think the design as a whole could really, really reflect what you do much better. Your site is about art and decor and a specific culture, however your site looks very template-y. I would consider a professional custom design. The African culture to me screams color!! Where is the color on your site?? I agree with Pam that your logo should be bigger.
Your item pages are not using best practices- Your product descriptions are good, however the price is hidden in orange on top of white it the upper left, while the add-to-cart button is on the lower left-- the eye looks at an ecommerce site in a very specific way, and if users do not see the price or the add-to-cart button, they may not realize they can purchase the item...
Moleskines.com - Moleskine Notebooks, Planners, Journals and Sketchbooks is a good example to look at to see how a product info take can make a big difference.
Finally, it is also against best practices to require users to create an account to shop from your store. While this is a great feature to have for a site with a lot of repeat customers, gaining a customer is still the hardest and most expensive part of any insdustry-- don't scare them away the first time. Let them buy first and like it-- then create an account once you've earned their trust.
Hope this helps. You have some great products.
Donna