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If you are working from a specific combination or choreography, are you doing a right split jump or a left split jump? If not, try a right split jump just to start with. For our right split jump, this means your right leg is supporting you, foot flat on the floor and toe pointed outward. Your left leg is extended in front, straight, with your pointed toe touching the floor. Shift your weight onto your left leg keeping your knee bent outward, essentially forming a plie, while you shift your right foot along the floor to the front. Point your right toe as you bring your fully extended leg upward. Use your left leg to push as forcefully as possible off the floor. Push through your leg, the ball of your foot, and then even your toe to gain as much power as possible. While you are in the air, fully stretch your legs out in front and back, attempting to achieve your hard-earned split in mid-air. Bring your front (in this case, right) foot downward and land with your knee bent to absorb the shock. Keep your back leg and arms extended outward as they were in the jump. Bring your arms down as you pull your back leg down and through to point out in front as it did in the beginning.
Decide which split you are doing. Prepare your legs. Step forward. Raise your right leg. Jump. Extend your legs. Land. Finish.