You have some lovely pieces but your tags could use some work. Use two words instead of one and make them specific to what people would be searching.
So for winter dangle earrings make the tags (depending on what fits in character limit): snowflake earrings, silver snowflake, sterling snowflake, sterling earrings, smoky quartz earring, etc.
After that, yes you have to promote with the fashion media and social media (Tumblr & Instagram) to drive traffic to your shop.