First off, I believe you'll need a gallery to showcase the items you have for sale. I assume that's your blogspot page!
Since you're just starting out, you probably don't want to do anything that's going to come up to a lot of money, so you can advertise for free in Livejournal communities. There are literally hundreds of buy/sell/trade and craft communities that allow you to do that - and you already have your market there too!
Also, if you have a Facebook or Myspace or some other social networking site, you could set up a group (in Facebook) for your jewelry and invite people that you think would be interested to it. If you don't want to do that, I guess you could leave people testimonials or messages, telling them about your new store.
You could also send an email announcing the opening of your shop (online?) to your MSN friends' list or something.
I guess that when you've decided you want to take a step further, you should consider getting business cards printed, maybe some stickers too! I've found some people at Etsy provide services like that, but maybe you can find some offline print stores that can get it done for you at a lower price.
However, you can still use Etsy with a DEBIT card
I think signing up for one of those is easier
Hope this helps!