I think the section look good, but you might want to change the canvases to abstract canvas art to make it more searchable (your sections can help with SEO). And maybe make the beachy canvases, beach canvas art.
You should work on your titles and tags though. You should have what the item actually is (canvas painting, print, etc) in the first three words of your title. Your tags should be phrases that people will search for if they're looking for art like yours. For instance, most people aren't going to just type in blue, but they might look for blue painting, beach art, abstract painting, etc.
I also found it somewhat confusing that you say your prints are digital print versions. I had to double check to see if the listing was actually for a print or a digital file. Then I thought that maybe the original was a digital image, but I realized that wasn't the case either. I think it's unnecessary and a bit confusing. I hope some of that helps!
