Shopping cart

This Sunday has started with a shopping cart in my head. It's always such a huge responsibility to work on this part of the shopping experience. It's a point where so much frustration can occur and, as a designer, it's on you whether this experience is going to be smooth and successful both for a person who is buying and the shop owner. That's why I keen on simplicity here and minimum experiments.

What is your approach to shopping cart design? Do you like to add novelty to the checkout process?

P.S. Original mock in the attachment. Don't forget to check it out too ??