I am not sure i can offer much, you are in a better place (sales concerning) than me!
Your shop looks great, your photos are clear, different angles and aspects, all the informations provided the right way, your policies look trust worthy, so i guess it is all a matter of Seo and tags, which to tell you the truth look fine to me!
Add more items if it is possible (i also try on that section) or if you can afford it try to renew now and then some of your pieces to keep high in searches!
Good luck!