Since the front of the chair is wider than the back and I marked a spot on the front rail equal to where the back rail ends, the weave stayed near 90 degrees and it leaves a triangle on the sides. I found that a flat-head screwdriver helped out tremendously on getting the underside of a weave to come back topside. In some of the more narrow/tighter spaces, I used a small tool that is like an ice pick with an angled end. It came in a cheap screwdriver set I had bought at Wal-Mart several years ago. Never knew what to use it for, but it came in handy here! I think most folks work on the sides after they've completed the rest of the weave, but I needed a change of scenery so I worked on that for a while.