It all starts with Dorothy:

Dorothy was the girl swept up into a tornado and dropped by its force into the Wonderful land of Oz. There upon her way she receives a kiss on the forehead by the witch in the Munchkin kingdom -- and also the magic slippers of the wicked witch that was killed by her falling farmhouse. In the book the slippers were silver with pointed toes. Did you know that? :)
Along her way she meets the Scarecrow:

The “brainless" Scarecrow joins her, hoping to ask the Wizard for a brain. Eventually he gets a head full of pins, needles, and bran, to make him very sharp indeed. I gave him a diploma so he can still look smart without being pokey when hugged.
After that, they find the Tin Woodsman, frozen in one spot:

Luckily my Tin Woodsman has less of a tendency to rust. Still, just to be sure, he also carries his trusty oil can with him. He brings his ax along to help clear the path for Dorothy and the other travelers to reach the amazing Emerald City. There, Oz grants him his wish: the gift of a heart, "made entirely of silk and stuffed with sawdust." The Wizard soldered it into the Tin Man’s chest in the story, so I’ve left the scar where you can see it.
Then they have a brief scuffle with a rather Cowardly Lion:

It’s tough to be such a cowardly king! The Lion follows along with Dorothy and her other friends to the fabulous Emerald City, where he hopes the Wizard of Oz will give him courage. The courage the Wizard originally provides in the book is green liquid and comes out of a bottle – lots of people do find their bravery at the bottom of a glass like that. But I decided to show our Lion as the brave and happy creature that laughs at his former cowardice.
But then Dorothy and her friends are sent to dispose of the Wicked Witch:

Pure evil, or so we're told. In the story, she had only one eye -- but it could see like a telescope. For the sake of symmetry I gave her both eyes, but I kept all the other wicked witch tropes alive -- the green skin, the black dress, the pointed hat, the broom. She is so evil that when Toto bites her she does not bleed; her evil had dried her up ages ago. She forces Dorothy to be her slave until the time that Dorothy sloshes a bucket of water over her, melting her into non-existence.
The Wizard is able to escape in a balloon, but Dorothy needs a bit more help from Glinda:

Glinda the Good Witch in the original Wizard of Oz story has red hair and bright blue eyes, and a white dress -- but how boring is white? Glinda is such a pink name. It practically has sparkles on it. So I gave her a pink dress. Glinda meets Dorothy towards the end of her story, and helps Dorothy to realize the power of her silver slippers to get her back to Kansas. She also sets up the Scarecrow, Tin Woodsman, and the Cowardly Lion each to rule their own little kingdom of Oz.
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I hope you’ve liked my little picture show; I didn’t mean to bomb everyone with so many pictures but I wanted to wait until I had the whole group to display. If anyone’s interested, I’ve got all these patterns available
on my website; and soon I’ll be rounding out the set with the Wizard, some munchkins, some flying monkeys, and Toto too!