Tags and titles are why you aren't getting found.
The first item I look at:
http://www.etsy.com/listing/113046026/perfect-valentines-day-gift-gold-pearl?"Perfect Valentines Day Gift - Gold Pearl and Crystal Dangle Earrings - Here's My Heart"
Does not make use of keyword phrases that will get you found. If you want to get found, you need to accurately describe your item in the title using as many keyword phrases as possible, and then pick those up with your tags.
You also need to get found in categories that have less than 60k items. Valentine's Day? Over 200k, and totally random things that have nothing to do with what you are trying to sell or promote. GB Oliver has a point... adding adjectives will help with that.
Maximize the use of characters in your title... there are 150. Use all character spaces in your tags if possible... there are 20. And use all 13 tags. Make phrases things that people would search for.
You have some good examples of tags but they also need to be keyword phrases in your title (and vice versa... no gold pearl or crystal dangle in your tags???):
gold earrings
crystal earrings
wedding jewelry
wedding jewellery
dangle earrings (add adjective)
heart earrings
Instead of having two separate tags combine these into one:
matching jewelry set
These are not terms people will be able to find you with:
matching set
spoiled rotten
heart
Valentines Day gift
Valentines Day
I know why you want to use Valentine's day as a tag and in your title, however I would suggest as GB Oliver says promoting outside of Etsy for Valentines Day rather than using it in your SEO. I think there are better categories for you to get found in.
And finally... are these real pearls or glass? Are the crystals swarovski or not? Make all of the materials you use totally clear in your description.