After the review, I selected 3 checkouts that I felt were modern, and had a good mix of convention and innovation to use as starting points for paper sketching sessions. I was looking to break each of them down into their component elements, both to find the points of commonality between them and also to find the elements that elevated each particular checkout.
Those three sets of sketches ended up as the three different design directions that were pitched to my client. In the end the client like elements from each of the directions so I ended up iterating a new design that integrated all the elements the client was interested in developing.
The final iteration was signed of by the client as the approved design direction, and we moved on to wireframing and prototyping.
Paper Sketching / Early Iterations