I find it almost impossible to keep my heels together for seizas. In the elevated seiza, my bodyweight rolls my feet outwards. Like, my feet can't seem to stay aligned vertically once I sit back on them. Should I hold them together with my hands or something?
For the curled seiza, keeping my heels together puts all of my weight (literally 100%) on my big toes. My 3rd-5th toes don't even touch the ground, but looking at the pictures and video, the participants have all their toes curved on the floor.
One other minor thing: for the kneeling achilles stretch, my ankle rolls inward. I have a fairly low arch to begin with and it doesn't cause any discomfort, but does the medial flex of my ankle take away from the stretch on the achilles? Should I try to "hold" my ankle in more of a neutral position?