Find the right materials that will work for sewing straps. If the is P/V semi-easy to fold, and the texture looks like leather, then it will work. Always buy more than you think you will need. Keep in mind the kind of pleather that is really thin. This thin P/V is better suited to making handbag bodies, and not the straps. Thin pleather/vinyl will simply stretch too much to work for a strap.
When cutting p/v, it is necessary to start with a straight cut across the entire width. I use 2 or 3 rulers lined up end to end to mark this straight line, and then cut off the uneven edge to have a clean start to measure and cut the strap pieces. Use an ink pen to mark your cutting lines as felt tip markers will bleed through some p/v. Rotary blades work well to cut p/v evenly to ensure an accurate measurement for the straps.
|Measure strap 4.5" wide|
|Mark right folding line|
|Sewing the first row of stitches|