I didn't make photos of the steps, but I will highlight on the assembled kit each of the steps you have to follow.
Step 1: What you will need
Something to cut plastic: I used my swiss army knife.
File to soften the edges.
Drill to make holes in plastic. Wood drill will do, it has a pointer to help keep in position.
Electrical fast ties.
Straps, and buckle from an old backpack.