Looking at your bow ties and your neckties there is a big difference in the number of views each are getting the bow ties all have 200-400 views and the neckties have around 45-150 views each with a couple of colours which have more than that. That suggests to me that your neckties are not getting found as often.
I think you've obviously already worked on seo quite a bit in your shop, but there is more you can do. One more thing to suggest is just typing all the possible descriptors for your neckties into the search bar and seeing what else comes up. For examples 'skinny tie' comes up before 'skinny necktie' so maybe try a listing with that in the title. You want your main keyword phrase to be in the first 2-3 words of the title ideally, then add further descriptions later. The main keyword phrase needs to be a popular one.
I'll go through an example of one of your pieces:
http://www.etsy.com/listing/100172980/skinny-necktie-with-stripesYou've optimised it for 'skinny necktie' but that is your ONLY stripy tie, so I would definitely focus on that characteristic. Typing various 'stripy necktie' terms into the search bar shows that the only term that comes up as popular is 'striped tie' so that's probably the one should go for. Add 'in brown and gold' in after the keyword phrase.
For tags lots of the phrases you have used do not come up in the search bar when you type them in. Try 'brown tie' 'mens tie' 'wedding mens tie' 'mens skinny ties' 'skinny tie' 'linen tie' as all of those terms come up in the search bar as popular ones.
It can be a bit grueling going through your whole shop at once updating all the search terms so just do a couple at a time! You'll see the difference I reckon!
Hope that is useful!
Best wishes,
Emily