What happens next in this paragraph?

How to make baby sock roses
Lay a sock on top of a work surface.
Starting at the bottom, roll the sock by rolling the bottom of the sock up and over.
Continue rolling until you have rolled the entire sock.
Choose from:
a). Place double-sided tape along the interior of the sock's remaining edge. Press the taped edge of the sock down against the fabric of the sock to seal the edge..
b). Snip off the big hem two inches (five centimetres) off from the top. This step is optional, but it is likely that you will use this garment to make colorful baby sock roses..
c). Keep rolling until it is full and elastic, including the perimeter. Lay the sock flat on the work surface..
d). Roll the sock up again, smoothing out the rolling motion once you have rolled the bottom up. Lay the sock on top of another piece of scrap paper so that it is even with the other sock on top..
a).