Wow I really like your shop :)
Some ways to tell if your pricing is accurate is asking if your paying for your skill,time and materials. Personally your items are out of my range but it seems more geared towards a high fashion look :)
You should really work on your tags, you can use multiple words/phrases. Use tags that you would search for to find your item such as "fashion necklace" "chunky necklace" and "spike necklace"
