Squat: Bring your stance in about 2-3 inches, reach back with your butt further, and stay with your hips longer.
Bench: More torso and lower body tightness. Scoot your butt a little closer to your shoulders, and keep your chest raised throughout the entire set. You see how it starts raised, and you flatten out after a few reps? Also move your feet a little wider, and be sure they're directly underneath your knees. Brace everything, and imagine your upper body as a spring that's loading as the weight lowers.
(Insert disclaimer about the necessity of lifting shoes here)