Create a ecommerce website in prestashop. -- 2

Hello, I want to create a website with Prestashop. I would the same that www.devilprint.com. the majority as a classic e-commerce , but should developpe a custom module (give the possibilites to import a photo,and could order him "custom work". more informations will given after assign the project. Its a website that sell a photo on different materials (glass,paper). The members have possibility to import photo (after he choose the size), or order exist product. The cms was already installed and also the template,you can do what do you want about this. Also the design, i want the same, i will send the logo , and some psd files, but for 90% its the same. Thanks.