Squat: You're collapsing into the bottom and bouncing off of your calves. Get tighter and maintain control on the descent. You're also trying to keep your torso too vertical on the way down. Lean over a bit.
Press: More aggression. One must press with hate in one's heart, especially if you're doing a strict press.
Deadlift: You never even try to set your back prior to pulling. Squeeze your chest up as hard as you can, then push the floor away.