Make a slip knot and chain 4
Join the chain with a slip stitch to form a ring
Chain 3
Work 2 double crochets into the ring
Chain 2
Work 3 double crochets into the ring
Repeat the chain 2 and 3 double crochets three more times
Chain 2
Join to the top of the starting chain 3 with a slip stitch
Slip stitch into the next space if needed
Chain 3
Work 2 double crochets into the same corner space
Chain 2
Work 3 double crochets into the same corner space
In each next corner space, work 3 double crochets, chain 2, and 3 double crochets
Join each round with a slip stitch to the top of the starting chain 3
Continue adding rounds by placing 3 double crochets, chain 2, 3 double crochets in each corner
Work 3 double crochets in each side space between corners
Repeat until the square reaches the desired size
Fasten off and weave in the ends