Hello there.
On the first and second reps, you didn't really use your hips to initiate the movement. You kindof raise the bar up, then let it rest on your chest before actually pressing it overhead. The third rep had some hip thrust, but there was too much time inbetween actually performing the thrust and initiating the press overhead. Try and make those two movements more fluid, with the thrust leading into the press. Solid weight!
You also might want to flip your hat backwards when pressing so the bill of the hat doesn't get in the way