Congratulations on losing all that weight and staying consistent with your training.
I'm sure you'll feel a little more comfortable about getting into the correct positioning as you continue to lose weight.
You have good speed on the bar but you dive through a little when receiving it in the bottom position. Try to keep your torso a little more upright. This is usually caused by mobility issues with the ankles or the hips. Incorporate some isolated mobility exercises for both and see if that helps. Also, make sure your joints are good and warmed up before you start your training.