Step 1: soak cotton fabric in soda-ash solution, crumple up and place on drainage rack in plastic tub.

Step 2: cover with several inches of fresh snow

Step 3: sprinkle fiber-reactive dye powder on snow. I use Procion MX.

Step 4: Cover and wait 24 hours.

Step 5: uncover and be amazed.  Rinse in cold water until water runs clear. Wash with synthrapol and dry.

Step 6: press and be even more amazed.