Karolin,
You are creating beautiful jewelry from pencils. It is so unusual that and most shoppers do not know this exists. For your shop, it is very important to find popular keywords that are very close to what you make but are better known by shoppers.
Your shop title is:
pencil jewelry, burl wood jewelry, tulle adult costumes
Using Google's Keyword Tool:
https://adwords.google.com/select/KeywordToolExternal?forceLegacy=trueI checked these keywords to see how popular they are on Google:
[fantasy costumes] 3600 1900
[wood jewelry] 1600 1000
[wooden jewelry] 1600 1000
[pencil jewelry] 36 16
[adult costumes] 14800 9900
[home decor 110000 60500
[wall art] 90500 40500
[desk art] 210 110
[wood home decor] 91 58
[wooden home decor] 110 58
[wood wall art] 1300 1000
[wooden wall art] 1600 720
[wood desk art] - -
[wooden desk accessories] 140 91
[wood desk accessories] 140 110
The first number to the right of the keyword phrase is the total global searches. The second number is the total local (USA) searches.
Some of these keyword phrases are much too popular and have so many web sites competing on Google that you should not use them. Others are not popular enough for you to use.
Based on what I see in your shop, I think these keywords would work better for you in your shop title:
Wood Jewelry, Fantasy Costumes, Desk Art, Wall Art
Some of the other keywords in the list above would work very well for some of the section names in your shop and others can be used in the listings as well.
Since pencil jewelry is not very well known, you should add more keywords to the listing, placing the best keywords in front of the listing title, such as,
color pencil pendant necklace, geek jewelry, chemistry of love, chemical formula of LOVE, valentine day jewelry
The keywords in the above listing are:
pendant necklace
valentine jewelry
geek jewelry
Use all of these keyword phrases in the listing tags as well.
Always use Google's keyword tool to search for keywords that are at least somewhat popular that will help your listing get found on Google and on Etsy. You can come back here and ask about anything you are not sure of or just to get more help.