how can i do this?

Use ALOT of swarovski crystal...it's the best selling affordable jewelry in the market...check out ebay..research what jewelry sells best and what gets good bid...then when you list your jewelry on ebay...follow the competition so that you are not selling for too much more than they are...also offer shipping discounts and other things...I SELL ON EBAY...SO LET ME KNOW IF YOU NEED HELP...I DON'T SELL JEWELRY, BUT I DO MAKE IT AND HAVE SOLD IT OFFLINE...VERY LUCRATIVE BUSINESS

You could start a blog and place photos of all the jewellery and paintaings you make. When anyone likes any of the pieces, they could contact you to get that piece. Make sure you have a very lively and active blog to attract more and more visitors. When an order is placed, you should be able to deliver them within the time. So make sure of tht too.