Kistha, first off, I think your shop looks good - bright and cheery, and I like the 'feel'. So I'm just going to mention a couple things that might help a bit. First - your tagline, under your shop title - it'. That's one of those areas that Google searches (or so they tell me). "A handmade boutique" is a nice phrase but nobody is searching for that. How about "Handmade greeting cards and polymer clay food jewelry". Or something along those lines?
Same thing applies to your shop announcement. "Welcome" and similar phrases are courteous and friendly but don't help people find your stuff. And if I've been told correctly, your shop announcement is a very useful place for keywords or customer-friendly info. (In mine, I mention what I sell - and then describe the 10% discount I offer. I know at least some people read it because they use the discount.) So, that area is a really good place for SEO phrases.
That's a start, I'm sure other people will have some more-fun ideas!