While I think the twirl-change from the TV show is great, this sketch is inspired by the way WW would transform herself in comics in the late 70s.
Looping her lasso around herself, or leaping through it would complete the transformation from Diana Prince to WW. I liked always seeing part of each outfit, as you can here.
Otherwise, the sketch is inspired by the 50s bathing beauty WW (original series #s101-104).
In the 40s, even with the bad art, WW had an in-style hair-do and a costume that said "I'm not going to stay at home and cook for you".
Just when she was feeling dated in the 50s, she began looking more and more like a bathing beauty. Starting with #84, and reaching a pinacle with #s 101-104, she looked quite nice.
But with #105, even with the same artist, she was instantly transformed into an ugly, stern prison matron, and remained so for most of the 60s. She was so far out of fashion for the period, it's fascinatingly ridiculous. I'd love to know the editorial decision behind that.
Sure, the de-powered mod WW from the late 60s isn't quite my scene, but at least it was a modern take on the character. And, I do love Mike Sekowsky!
Anyway, practice leaping through a lasso at home if you get tired of twirling.