To perform a standing long jump, follow these steps:
1. Stand with your feet shoulder-width apart.
2. Bend your knees slightly and swing your arms back behind you.
3. Swing your arms forward and upward as you jump explosively off both feet.
4. Try to jump as far forward as possible, extending your legs in front of you to land.
5. Aim to land on both feet simultaneously and try to maintain your balance upon landing.
Remember to practice proper jumping technique and gradually increase the distance of your jumps over time.