Jo,
No, a good product is not enough!
Etsy is a huge ocean of beautifully crafted items, and each of our shops is but a drop in that ocean. You're an artist when you create, but you have to be a strategist and business-minded when you list your items. If you want sales, people have to find your item when they are searching. In order to find your item, your titles and tags need to be relevant, and your photos need to be eye-catching.
I've looked at your shop, and although you sell "good products," there are some things you can improve.
Titles. Title your item the way someone would search for it in the search box. If I wanted an illustrated flower card, I would search, flower card, illustrated flower, outline flower, flower drawing, orange flower, rainbow flower, etc. I would NOT search zentangle, zendoodle or "original drawing." Your first few words should say what the item is (these are weighed most heavily in searching), with other descriptors following. Try "Flower Illustration Card, Original Ink Drawing, Bright Red and Orange with Lotus Leaves and Spirals." That way, you can possibly get hits for a few more search terms.
Tags. You are tag stuffing, which is against Etsy rules. Read this:
http://www.etsy.com/blog/en/2011/putting-your-shop-on-top-etsy%E2%80%99s-most-relevant-search/Again, think of the things that people would type into the search box if you wanted them to find you. Go to Your Account (top right) and Shop Stats (left hand side, or just hover your mouse over Your Acccount). Click on "This Year" or "Last 30 Days" or whatever time period. Scroll down and look at your most searched terms. If your most searched term is "red flower," make sure you include that whenever possible. For example, I noticed that people were searching "Harry Potter," so I added more of those items to draw people into my shop. On the other hand, if you do not see something like "illustration" at all in your search terms, that means that so far, no one has really been finding you through that word.
Photos. Your photos are nice and clear, however, the ones with the colored background look really different. Also, some of your photos can be slightly zoomed in more because in the thumbnail shots (or in a page with many different search items), it's hard to see the detail. Also, you have 5 photo spots, so use 3-4 at least! For some people, $3 plus shipping is a lot; use photos to convince people to buy!
Finally, your banner is bright and eye-catching, however, it has nothing to do with the detailed yet clean items in your shop. From looking at your banner, I would expect tie-die t-shirts, not delicate card designs.
You have a good product, but that is simply not enough to get noticed in a congested category like paper products (believe me, I sell cards, too, and I know it's hard to get noticed, especially when so many people can crank out large volumes by printing their graphic designs versus drawing or crafting by hand).
Hope that helps,
Aman