How to pitch using slide step

how do i pitch using slide step
please be very specific

All right. You’re in the stretch and you come together with your hand in your glove, gripping the ball for whatever pitch you’re about to throw. Have your feet preferably shoulder width apart and take your look back at the runners. Without even lifting your leg, lift your stride foot maybe two to three inches off of the ground, step towards home plate without breaking the motion and let go.