Per Beadwrangler project page:

Supplies 44 size 6/0 Czech or equivalent beads (22 beads for each foot) Rainbow Elastic thread, size 3mm - bulky, 25 yard card 1 size 3/2.10mm steel crochet hook 1 Big Eye or Heavy Long Twisted Wire Needle ( Heavy will fit 6/0 beads with smaller holes) 1 tapestry or sewing needle that accommodates elastic thread 1 button or safety pin scissors

Gauge, 8 chains to the inch with size 3/2.10mm steel hook

General Instructions: You will start with chains, then add a bead chain intermittently, working from one end of the strap, down to the toe section, then joining the toe section to the strap and building a mid-section of sc, hdc, dc and tr stitches, then joining to the beginning chain and stitching the piece together. The whole piece is worked in a long row that is joined in two places before it is completed. Since everyone’s foot is not the same size, the pattern I am listing is for about size 7 to 8 1/2 foot. If you have a shorter foot size, you only need delete a few of the repeats in Step 2; if you have a longer foot size, you only need add a few repeats in Step 2. Make one sample first and then add or delete in the repeats in Step 2 for a perfect fit…

Step by step instructions given, above is the overview of the process.