I really like your illustrations and your shop. The shop is missing cohesion. I couldn't tell, the clothes or the artwork, the first time I looked at your shop, what you were selling. Before I did anything drastic, I would re-do your photographs, so folks like me can really see your art work. Make sure your About Page tells your story and shows you working your design craft, fashion design. It looks to me like you are a budding fashion designer. So highlight what you are doing in the About Page and promote yourself.
Maybe include some new words in tags like fiber artwork, wearable art, etc....Try to link your clothing line with your illustrations, so that your illustrations are doing a dual purpose and promoting your shop.