The items are drop shipped from AliExpress. The product images are cropped with Photoshop and then I also added shadows. This might also be possible with the Shopify Built-in image editor if you don't have photoshop. I started this store some time ago but don't have much time to work on it since the final days of school are here. I ran some ads and got 2 sales. The conversion rate when I was running the ads was about 1%. I got the idea partially after watching an Episode of Shark Tank where they showed how quickly a paint by numbers business grew. So I truly believe there is some potential for this business. I recorded the behavior of the website visitors and noticed that they scrolled through all products, so they definitely have some interest but don't always make a purchase. This might be because they didn't find a painting they liked.