Hey now, I never said she should be ugly! Just old. ;)

And actually, you have very good handwriting for a lefty. (My sister is a lefty, and her writing is nearly illegible.)

That's a pretty good list of ideas there. It'll be interesting to see how many of them will coalesce into one story.
Sorry, I added the ugly. Maybe I could use 3 villainous sisters, one old and ugly, the second, old and wise, the third old and cunning?

Or three sisters: one an old and ugly villain, the second a young a beautiful villain, and the third the middle-aged mother who isn't all that villainous.