After squaring my pieces up nice and neat, and then laying out the tenons. I used the following process to cut the 14 12 tenons in the project
Step 1: Using a shim the same size as the tenon plus the blade width, I cut the cheeks of the tenon to the lay out line.
Step 2: Then I cut the tenon waste off with my hand saw.
Step 3: After lining up the tenon with the mortises, I cut the ears to fit.