What happens next in this paragraph?

How to make a mega tic tac toe board
Unwrap shower curtain and lay on a flat surface.
It may be creased so consider doing this a few days before the party. If you don't have time to " de-crease " it days ahead of time, lay a sheet over the top and apply a warm iron to the sheet.
Pick from:
[A]. The heat from the iron will also set the keratin under running water. This is necessary to ensure that your board doesn't turn out too wet.
[B]. Create the tic-tac-toe lines with the tape. You will ultimately have nine boxes with the tape.
[C]. This position allows the satin sheets to only look off due to the steam loosening the sheets. This is also an option in case you want a more dressy look for your party.
[D]. It should be about 110 f (43 c) for extra warmth. Lay the white t-shirt face down on a flat surface.
[B].