Power clean form, im falling over?!

Power clean form, im falling over?

I'm trying to get under the bar on power clean but every time i throw the bar up and catch it low i end up falling backwards, what's wrong with my form?

1 week ago
I mean large amounts of weight like my whole body weight around 130 lbs

Check out this link it has a video and explanation for power clean technique
Beginning Position
• Assume a shoulder-width stance, knees inside arms.
• Position feet flat on floor.
• Grasp bar with a closed, pronated grip.
• Grip should be slightly wider than shoulder-width.
• Squat down next to bar, heels on floor.
• Fully extend arms.
• Point elbows out to sides.
• Position bar over the balls of the feet; bar should be close to shins.
• Position shoulders over or slightly ahead of the bar. Establish a flat back posture.


Upward Movement Phase: First Pull
• Begin pull by extending the knees.
• Move hips forward and raise shoulders at the same rate.
• Keep the angle of the back constant.
• Lift bar straight up.
• Keep bar close to the body, heels on the floor.
• Keep elbows fully extended.
• Keep shoulders back and above or slightly in front of the bar.
• Keep head facing straight forward.
• Maintain torso position.


Upward Movement Phase: Transition (Scoop)
• Thrust hips forward and continue pulling until the knees are under the bar.
• Keep feet flat.
• Torso should be nearly vertical and erect.
• Keep shoulders positioned directly over the bar.
• Keep elbows fully extended.


Upward Movement Phase: Second Pull
• Brush bar against the middle or top of thighs.
• Keep torso erect and head facing straight or slightly up.
• Keep elbows straight.
• Move bar explosively by extending the knee, hip, and ankle joints in a "jumping action."
• Keep shoulders over the bar as long as possible, and elbows out.
• Keep bar close to body.
• At maximum plantar flexion, shrug the shoulders.
• At maximum shoulder elevation, flex and pull with the arms
• Keep elbows high during pull; keep them over the wrists.
• Pull bar as high as possible.

Catch
• Rotate elbows around and under the bar.
• Hyperextend the wrists as the elbows move under the bar.
• Point elbows forward or slightly up.
• Rack the bar across the front of the shoulders.
• Keep torso erect.
• Flex hips and knees to absorb the weight of the bar.

Downward Movement Phase
• Lower bar slowly and under control to top of thighs.
• Flex hips and knees as bar lands on thighs.
• Squat down toward floor.
• Maintain erect torso position.
• Keep bar close to shins.
• Place bar on the floor.

Breathing
• Inhale before the first pull of the first repetition.
• Hold breath until second pull.
• Exhale through the sticking point (shrug) of the second pull.
• Inhale during the downward movement phase of succeeding repetitions.