And the back like this -












15.  We'll now make the circle into a square.  (You could also make a hexagon at this point if you wish by working 5 dc, dc ch 2 dc in same st, repeated 6 times around). 

But to make a square; ch 3 (rep. 1st dc), 2 hdc, 2 sc, 2 hdc, 1 dc, (1dc, ch 2, 1 dc) in next stitch; *1dc, 2 hdc, 2 sc, 2 hdc, 1 dc, (1dc, ch 2, 1 dc); rep from * 2 times more.  Sl st to ch 3.