Hi Vladmir. I beleive I have seen some on your brush restores on the forums. Glad to see you on Etsy, you do beautiful work. From looking at your storefront, you sem to be doing alright so far. I only have a few things I would look at.
1) Pictures. You pictures are very well done, but I would make sure an post the max allowed of 5 pics per listing.
2) Tags: You rae not using all 13 tags and I think you could be using a few others. Examples would be; shaving brush handle, Made Rite shaving brush (or any other brand), custom shaving brush, lucite shaving brush. Try to include the color, shape, ect..
3) You need to fill out your policies page. Some people will not buy from a store that does not have one filled out, and it can avoid confusion on sales. Take a look at other shops and see what they have used. It's a great reference.
Once again, welcome!
Matt