Giggles,
There is no magic number of a good bounce rate. For those who are reading and don't know, your bounce rate is the rate of people who click on your shop, and then leave before they click on another page. In the real world, this would be someone who looks at a shop window at the mall, but decides not to go in. If your bounce rate is 50%, that means half of people will click around in your shop, but the other half leave before they even look at another page.
Like I said before, there is no "magic number" for your bounce rate. For some people, a bounce rate may be very low, like 30 to 50%, but they might not get sales. There is one shop that I alway look at (twigs and honey) that has beautiful photography with lovely models. I can spend 10 mintues just clicking on the pretty photos, but I do not wear those types of items, so I would never buy. Conversely, sometimes I buy supplies like ribbon (which is kind of boring in comparison to pretty models), and I would only look in the shop if I wanted to actually buy more ribbon for my crafts.
Just for Giggles, your goal should be to lower your bounce rate over time. If you have a specific goal in mind (like 30% or 40%), try to work towards it. What makes people come to your shop? Check your shop stats for your best keywords (Your Account>Shop Stats). What is the #1 tool for making people stay and click on your items? PHOTOS!!! Make sure your photos draw people in so they look around. Right now, many of your photos look like they are taken on a rumpled up bed. When I look at your shop, there is no theme tying your photos together and they are kind of random. Work on building a brand and image through your photos, and experiment with lighting and backgrounds to make your items really pop out from the page! You don't need an expensive camera or fancy props, just good lighting and a lot of patience.
Aman