Honestly, what works on your website can easily work on Etsy.

And the great thing is that you can stand out on Etsy, because you are creating a brand (website, social media). I would suggest point everything to your website or newsletter.

Just decide what you want to sell. If printable designs (digital products) than the margins are low and the competition is huge.

But if you go for print-on-demand, and put your images for example on wall art, you can then find your niche with low competition.