Off the floor, that bar is moving forward - the first thing it needs to do is move backward a bit. Think of moving the bar, your knees, hips and shoulders all back slightly as you break the bar to shift your weight back toward your heels and then keep it there as long as you can during the pull.
Bar is also swinging away from you after the hips - make sure you're turning your elbows out to the sides (internally rotate the arms) and keep the lats tight as you extend to keep the bar against your body. On the way under, pull the elbows up and out to the sides while continuing to keep the bar as close to you as possible.
RE feet, it looks like you're starting with them pretty wide already. If you can, bring them a little closer and focus on reconnecting the heels with the ground - land flat-footed.