Nice job man.
This to me as well, and it also happened during your pulls. It looked like you would get tight to unrack the bar and them immediately loosen up and look down when you began the lift. Try to work on keeping your head up or neutral and your upper back squeezed tight the entire time you have the weight. For your deadlift, this will help allow your lats to finish off your lockout. If you don't do any upper back work, now is the time to start (face pulls, high rows, etc)
Get a coach if you can afford it. Whether its online or in person.... Noone does this shit alone.
Start a log here. I will follow.
Eat more. You're 5'11 right? Don't have to turn into a fat bastard but ... You should weigh at least 200 lbs. At least!
Nice job though man. All I could think about after my first meet was my second one.