Creating Custom Brushes in GIMP - What NOT to Do . . .

Note to self - When creating new brushes, don't leave the eraser tool active and then wonder why all the new brushes you have created are not taking. Uggg...ggggg....gggg. Now I know.
At least I figured it out and am having a blast creating leaves and apples for my current project. SUCH a blast!
I can't wait to tinker more. LOVE GIMP!