For selling art you need a store that loads fast and handles image-heavy product pages without turning into a sluggish mess, plus you want to offer different print sizes and frame options. A modern nodejs ecommerce setup gives you that speed and flexibility, and you can customize the checkout flow exactly how you want it. Check out what is possible here https://medusajs.com/ . Worth a look before you commit to some slow template.

Add a close-up shot of the brush strokes or engraving lines on each product page, art buyers want to see the texture before they trust it is not a cheap print.