Tip's over that celebrity crush, though. Tip's a mature teenager now.
My Wicked Witch of the West is based mostly on W. W. Denslow's original design. Dorothy's blonde because that's how John R. Neill drew her.
Scarecrow's design comes from a few places. I kept a bit of the look Denslow and Neill built for him and added overalls to give him a more farmerly look. His straw hair comes from the design of The Scarecrow in the anime series, Ozu no Mahōtsukai. The CG animated series, Lost in Oz also gave him straw hair and it's removable like a hat. I really liked that idea.
You can't see Scarecrow's arms and legs in this image, but if you visit the cast page, you'll see he has ropes for arms and sticks for legs, making him taller than the Munchkin clothes he was made of. I borrowed that from Andy Hirsch's design for the Patchwork Girl in The Royal Historian of Oz, which is a VERY good graphic novel you should definitely read.