The project is to customize the collar online.
The reference site is using this open cart:
[url removed, login to view]
From the pattern you see in the image you have to totally rebuild, the product also has different measures.
Each size has a cost, each measure may have a maximum number of products to be inserted.
The customer once it touches the oggettoin automatically have to see the preview, with the ability to move objects from right to left.
After finishing you can buy and pay online.
platforms to be used or magento, open cart, virtuemart
For more info, contact me in private