Part 2 of 2: the assembly phase. See Picturing Halloween Pinwheel Cookies I for the dough-making phase.
Refrigerate the dough balls for about 10-15 minutes so that they firm up.
Roll each dough ball out to a 1/8-1/4"-thick sheet. Stack the layers.
Roll the stacked layers into a log. Wrap in plastic wrap and smooth any lumps or unevenness. Place the log in the freezer for 15-20 minutes to firm up. Use a serrated knife to cut 1/4"-thick disks from the log. Bake.