Well I also really like the webpage, I couldnt do something like that , since Im not very good with HTML etc :P
Well Im not sure how you can get more customers ( apart from advertising ) , but if you would like to know how many visitors you get on your webpage , then this google analytics feature is a great addition:

http://www.google.com/analytics/

Well you can track anything on your webpage, ( dayly , monthly annually visitors etc, but you can also set some market goals you want to achieve with your webpage )
its fairly easy , you just need to sign up and then you get some html script which you have to insert into your webpage thats it
hope thats helpful

Apart from that maybe you like to sell some products on ebay. I heard that some people got more success in selling things on ebay than just selling them in a store.
maybe this book is helpful:
http://www.amazon.com/eBay-Powersell.../dp/0072258691