If you've ever done a show think about how many people walk right by your booth and don't stop...they see you but don't want what you sell...then there are the ones who stop look at your stuff and act like it is poison and burns their eyes..then there is the one who stops and looks at everything you have and shows you a stretchy crystal bracelet she bought for $2 at the Dollar Store and wants to know if you have anything like it...then the next one looks at and tries on everything and walks away or buys the one pair of $5 earrings you marked on sale. If you are lucky a few people come in, love your stuff and buy a few things and then goes to get a friend and she buys some stuff too. And maybe, MAYBE they look for you at the next show and bring another friend who loves what you make too ....if they don't get sidetracked at another booth first and spend all their money.
That is what selling on line is like too, but multiplied by thousands of other booths!
So don't get discouraged. When I first started to make and sell things I was one of a few now I am one of many. I RARELY get a sale in my stores. My best customers love to pick up, try on, touch and talk to me about the pieces I make. Once I do sell on line to someone they will buy again, but getting that first sale is the hardest thing to do. Think of what you are trying to do like the tortoise and the hare..guess what we are all the tortoise!
And as Dori the fish said...Just keep swimming!