I used Katrina's soaker pattern in an XL. My son's waist is 19 1/2-20inches and his thighs are about 11 inches so I figured the XL would be a perfect fit. Turns out they were a little too big but look how cute they still are on my little guy.
My new plan, since the PUL and flatfold diapers didn't work for us, is to make underwear out of old t-shirts and add a soaker layer with some PUL on the outside to make them waterproof. I'm really excited to get started on them and I'm hoping to get a few pair done this week and maybe start training next Monday. I'm nervous already!