Presses looked fine. The only difference between a strict OHP and a Military press is depth; strict typically resets off the clavicle. But the front squat hold position looks NOTHING like the pressing grip. Elbow & finger placement is totally different.
Try to avoid using the body to kickstart the rep; butt clenches well on the third rep - squeezing the glutes like that is very beneficial to drive, much like the lats. Basically just squeeze the crap out of everything as violently as possible when you begin your press. Core is braced, grip (usually just outside shoulder width, but do what feels strongest/comfiest) is clenched, lats & glutes flexed as the triceps/delts explode.
Wendler pretty much says that it's not rocket science - take a comfy stance & grip, usually a hair outside shoulder width, tuck the chin back just enough to clear the bar before driving the head through as the bar passes by. Just keep doing it and you'll get stronger.
Pushpressing & jerks don't transfer well to anything besides those type of movements; strict/military ohp translates well to all overhead pressing & lying pressing of any kind. Unless you specifically need to increase your oly lifts or a logpress, strict has more general strength carryover.