You are going to go around the sole of the slipper with sc before you start the body.
After row 29, you have 3 sc. Turn your work and slip stitch in the first sc. Slip stitch, ch 1, sc in the second sc. sc in the 3rd sc. You have made 2 sc.
Now you continue down the side of the sole by doing a sc in the end of each of the 29 rows. You now have made 31 sc.
You are at the opposite end now, the end where you made your foundation ch. You worked in 3 ch in that foundation--sc in each of them. Now you have made 34 sc around the sole.
You are now on the final edge of the sole. Again, do 1 sc in the end of each of the 29 rows. Total is now 63 sc.
You are back where you started. sc in the first slip stitch. Total: 64 sc around the sole. ch 1, turn, and you are ready to begin the body of your slipper.