okay, here goes: have a diaper and a baby wipe.
standing, pants and underwear down to my knees, wet diaper still on.
flaps opened, whole thing folded in half lengthwise and fluffed up a little. this pops up the leg guards too.
between my legs laying on top of my pants/underwear. old diaper off.
brought up so the left guard is underneath where it belongs, attach lower left tape. fix right guard where it belongs, attach lower right tape.
square it on my waist, attach upper right tape, attach upper left tape.
fold over big waistband flap if it has one. pull up underwear and tuck diaper in, pull up pants, done!
that's my favorite way! it takes about 2 minutes and doesn't require any support.