Hi Nidhi,
To walk properly you need t follow some points like :
1. Keep your eyes focused forward, not up or down.
2. Chin should be pointed down and pulled in slightly to maintain a neutral neck position, which will prevent neck pain by properly supporting your head.
3. Relax! Keep your shoulders back and down and relaxed. This will cause your arms to swing naturally. Do not squeeze your hands into fists, keep them relaxed. You can bend your arms at a 90 degree angle or leave them at your sides, whichever is more comfortable.
4. Your chest should be slightly lifted. Imagine that a string is attached to it and is gently pulling your chest up and out.
5. Keep your belly button gently sucked in toward your spine. This will keep your abdominal muscles activated, which is a great workout for your tummy and it helps to protect your lower back from injury.
6. Use the heel-toe method. Your heel should strike the ground, then the ball of your foot and finally your toes.
7. Walk with the longest stride that feels natural. Do not take extra long strides to increase your speed. This will only increase your chances of injury. To walk faster, simply take more steps. This is the more wiser way to walk without injury.
CHEERS !!