Round 1: SC into each stitch around the entire blanket, working 3 SC into each corner. 

Round 2: Continuing on in the same direction, SC in the next stitch. *chain 5, slip stitch around the post of the SC you just made making a loop. SC into the next 4 stitches.  Repeat from * all the way around. if you happen to be working around a corner, put 2 SC into the corner SC. Slip stitch to join the round.

Round 3: Continuing on in the same direction, *6 SC into the circle of chains (work around each chain, you don’t insert your hook into the chains.)  Skip over the next SC, SC into the next 2 stitches, skip the next SC. Continue repeating from * around the whole blanket.  

Round 4: Continuing on in the same direction, SC into each and every stitch.  Slip stitch when you get to the stitch you started with and fasten off.

Weave in the ends.