I spent over an hour stamping circles of approximately 1 cubic cm on this cotton cloth. Then, I went over it with a hot iron, sandwiching the messy cloth in between two sheets of blank newsprint.
Lastly, I stuck it in the washer to remove excess dye, as well as the resist. I'm a little disappointed in the large white patches. I'm guessing I didn't iron enough to set the dye uniformly. Oh well, lesson learned!