Round 1: Ch 13, in 4th ch from hook (count this as your first dc), dc. 1 more dc in the same hole, ch 2. Then 3 dc, ch 2, 3dc, ch 2 all in same hole as first group. Corner made of rectangle. *Skip 2 sts, 3dc. Repeat from * 1 more time. In last st, 3 dc, ch 2, 3dc, ch 2, 3 dc, ch 2 to make other corner of rectangle. Then *skip 2 sts, 3 dc. Repeat from * 1 more time. Sl st to the top of the first dc.

Round 2: Sl st over to corner, make corner 3 dc, ch2, 3 dc. Do 3 dc in space between groups of first row.  You just repeat this around. Sl st tog.

Round 3: Sl st over 2 sts to the corner, ch 3, 2 dc, ch 2, 3 dc in corner.  Now in the space between the corners, do dc, tr in the middle of the dc from the previous row group, dc all in the same space. Repeat corner 3 dc, ch 2, 3dc in each corner. Repeat dc, tr, dc in between the corners.

Round 4: Repeat Round 2.

Round 5: Repeat Round 3.

Round 6: Repeat Round 2.

Round 7: Repeat Round 3. Fasten off and weave in ends.

This can be made however big you would like it.