Video Tutorial

Sole

Top part

Round 1: Back loops only, half double crochet around
Round 2: 4 double crochet, 5 half double crochet, 22 single crochet, 4 half double crochet, 4 double crochet, 7 decreases (double crochet))
Round 3: 1 treble double crochet decrease, 1 double crochet decrease, 2 half double crochet, 3 single crochet, 20 slip stitch, 3 single crochet, 2 half double crochet, 1 double crochet decrease, 3 double crochet treble decrease (varetas)

BACK PART

Round 1: Chain 23
Rounds 2-3: 22 single crochet