Oh, I've seen your artwork before, I love it! I don't think your prices are too high.
I would narrow down your titles and tags. You have wall art, home decor, office decor at the beginning of a lot of your titles which are really broad searches. I didn't have time to see if your items place in the first few pages, but the search "wall art" comes up with over 752,000 items. Chances are you will not be seen in the first few pages of that search. You need to narrow things down. Maybe use flower art, flower painting, bird art, etc. Even those might be too big, you would have to experiment, but if they are you might have to use something like pink flower art, or pink nursery decor. And then make sure your tags exactly match the keywords in your titles.
Also did you know one of your listings still says black friday, cyber monday? That's just a waste of title space. You want to put as many relevant keywords in your titles as you can.
You have great items, good luck!
