Place a mannequin between yourself an the goal. Angle your approach to the ball and use the inside of the foot following through quickly to generate the whip. Repeat on other foot.
Push the ball out in front of you. Plant the non kicking foot by the ball getting your head and body over the ball. Strike through the middle of the ball with your laces and follow through landing on your kicking foot. Work on both feet.
Work with a partner. Ask them to roll the ball into the center in front of the goal. Drive onto the ball and finish with the inside of your foot. Move backwards and explode onto the next ball and repeat again. Go for finesse and work off both feet.