Build a stunning website (e-commerce) where people could create beautiful posters

The website should have a really nice, engaging design, great UX and at the same time be simple. The website will let people create a customized poster, see a preview and then validate and go to cart to make the payment. The client will then receive few days later his poster. Here some examples of website doing the same thing: [login to view URL] [login to view URL] [login to view URL] [login to view URL]