Your stuff is great, you will sell! You have a popular item.
Keep your chin up- give it time.
Personally I will tell you this- you will get alot of advice from sellers who will
always critique your shop- very few will critique the site itself which I find a one sided story and as a newbie without sales that can be very frustrating.
There is a learning curve here, certainly pictures, tag, titles, are part of it but
doesnt tell the entire story.
Etsy is a beautiful site, a beautiful venue that offers very little support , seller tools, or Buyer growth for it's sellers. Etsy is a business in business to sell stores to us- most of the support you get will come from the Sellers themselves, there are many off-etsy blogs with great advice on how to sell & the reality of selling on Etsy. I would start there, reading off Etsy and apply what feels right to you, for your shop. Also remember Etsy is only one site-
the more streams of income you have ( spread out your eggs ) the better you will be.
Dont just paint yourself into Etsy's corner. There's nothing wrong with watching out for your own best interest & happiness.