Hi there! I saw your post and totally understand your frustration. Growing your business on Etsy can be a slow road, and sometimes it just takes awhile to click! You have great work and I love your style. I am still learning, but here are some tips I have learned along the way.
1. Try to have a minimum of 50 items in your shop. Some people say there is a magic number where they suddenly start getting sales. Most advise to have at least 50 items.
2. Investigate and join a few Etsy teams that focus on what you sell or have a lot of members. Be active on these teams to help get your items in front of people and to get support and wisdom on how to improve your sales for your specific product.
3. Experiment with tags. Tags are so confusing to me still. There is a lot of information out there regarding how to tag and how to improve your tags and SEO, but how you tag definitely makes a difference. For example I clicked on one of of your bottle wraps, but didn't see water bottle in the the tags, this small change could make a difference when people are searching for you. Also for treasury promotion teams, tag your items with the team name so they will pick up your item to be included in treasuries and including the color of your items will help people and treasury makers find you. (you may already be doing this, just took a quick peek at one listing!)
4. Read, read, read. There is a ton of info out there on how to be successful on Etsy. I like this one... lots of great info!
http://www.handmadeology.com/10-real-tips-for-successfully-selling-on-etsy/I have also picked up a few books. It all helps.
Stay positive! :) take care! Kristen