Fixing a rip in a beautiful 6′ bell tent? : camping

This is my post! I was a dumbass taking down a 6′ canvas bell tent, left something sharp inside, and it ripped a seam. It’s a fairly important seam, near the top of the tent where the central support is, about 14″. Most of the fabric is left. How should I fix it? I made a pitiful attempt to sew it before realizing that sewing canvas with embroidery thread is hard. Is Seam Grip glue enough? Maybe combined with Tenacious Tape?