Hi Kayla,
Your work is lovely, and you've obviously spent a lot of time and effort on your shop background and the few listings you have. Unfortunately, with only 4 items, you don't have a lot of opportunity to be found in search. There are almost 60,000 results for "custom wedding invitation" on Etsy, and you're offering one. Not great odds! So the first suggestion I'll make is to add more designs. Lots more designs.
The second thing is in some ways more minor, but makes a huge difference from the perspective of someone browsing tens of thousands of search results. When your "Custom Bespoke Rustic Winter Wedding Invitation Set (Digital or Printed)" shows up in the search results, have you noticed what part of the title is actually readable without clicking into the listing?
It's this: "Custom Bespoke Rustic Win..."
Now maybe I searched for "custom wedding invitations" so that's probably what's in the listing, but do I know that without clicking? Not for sure. And if I'd just searched for "rustic wedding" and that came up, I'd have no idea what it was. Not very helpful, right? This is why it's so important to have the critical information up front: what is it? If I like the style in the thumbnail and the first few words say it matches the kind of item I'm looking for, I'm much more likely to click on it.
In short, don't make the customer work so hard to find you and figure out what you're selling! Your work is really cool, and I'm sure you can be successful here, you just need to step up your marketing game :)