I divided the recipe and made a much smaller amount first. In dim light, put two coats of solution on paper. Let dry in dim light. Place negative on dry coated paper. Expose to sun, arc light, or other UV source.
Yellow image appears.
12.5 grams gallic acid and 12.5 grams alum in 1000 cc water develop 3 to 5 minutes, then wash in several changes of water. When the tissue softens, remove both sheets of paper, still face to face, from water. Place on glass and press with a squeegee. Then place in 80 degree F water, rocking tray until tissue loosens and can be peeled off, leaving the image on the heavy paper. Then hold the heavier paper, with the image, in an inclined position in 95 degree F water and slosh with water and dash with a wooden spoon to clear image.