Last night, I finished the "Kittens" project and this morning, I set to work on getting rid of that nasty yellow stain. I chose to do what Sabine had suggested first--got out a bath towel, laid the kitty on it, wet the stain with a warm and wet facecloth, tamped it with dish soap, stretched it out in a cross-stitch hoop, and ran boiling water over it. Guess what?
THE STAIN CAME ALL THE WAY OUT!!!! No trace left!!!
So thank you, Sabine, for your awesome suggestion!!
Here are pictures of the completed project, which I am planning to enter in the fair tomorrow. :)