Selecting your canvas strap
First of all, it’s important to define your technical and aesthetic criteria.
You have two solutions :
either a leather-lined canvas strap: with cut edges
or a strap made entirely of canvas: rolled-edge with a hem on the edges
The usable fabrics for the leather-lined canvas are the whole 16 ones displayed below.
For the rolled-edge canvas, all the fabrics are usable, except for the number 6. The canvas thickness, so the strap one, will be different. I encourage you to review that directly together.