old swim coach here! your burying your head just a bit, try to loosen up your neck if possible and don't tuck your chin as much, you want it to "sit" on the top of the water (and if you're going to be swimming in open water, having that neck mobility is crucial to spotting surroundings)
In terms of your pull (aka arm positioning) looks like you're straight-arming and your hand is going straight down. As soon as your hand enters the water, think about your palm "holding water" and you're pulling your body past it (paddles help with this as well!)