Read my comment below.
Cracked my watch screen. This guide was excellent and took the unknown out of the process. To remove the old screen I found that if you apply steady gentle pressure long enough to the center of the black "cushion" on the back of the old screen shown in step 5 the screen will eventually begin to peel away from the metal watch frame. What you are actually doing is pushing the old screen AWAY from the frame (not pulling it inward). I got lucky, my adhesive stayed with the watch but I was prepared to use black FlexSeal liquid and apply it with a toothpick to the frame if needed.
Thank you for this tutorial!