The folding style is the kite fold, with a bit of a variation. The variation is that I use two flats together for added absorbancy.
I took pictures of specific small steps to help you get a good tight fit that eluded me when I was first putting flats on- and finding them falling off or drooping later.
The double kite fold: Using one GMD birdseye flat, and one flour sack towel
Spread birdseye flat out as a diamond shape in front of you. (I hate that these flats were stained, but I promise they are clean! Not many bright sunshine filled days here in the Pacific NW winter)
Fold down the top at the same horizontal line.
Now for putting on baby... (and I realize my little Leah has a rash, sorry)
Place baby on top with the top of the diaper coming up higher than the belly button. Yes, higher than the belly button. You will see that in wrapping it around baby, it has a tendency to 'shrink down' and fit just right. If you wrap it just over the legs, you will not get a good fit around the waist and it will sag and fall down.
Last, I tuck the edges of the diaper around the thigh up and in to provide greater comfort and mobility. Otherwise they can rub the top of the legs.
Here are some pictures of the fit: