Standing Forward Fold with Easy Twist
Soften your right knee, and place your right hand on the surface. From forward fold, the left arm must be fully stretched right towards the sky.
Also look up at the sky, trying to stretch your body as much as you can. Stay in this posture for some time while taking long breaths.
Bound Extended Side Angle Pose
It is a slightly tricky pose. From down dog, stretch your legs a bit. Make sure you left leg remains straight while bending the right one. Bend your head towards the right side, ensuring that your right hand holds the left one after passing through your legs.
Again you must look at the sky. Stay in this posture for at least five long breaths. There is no need to overstretch your body, as it may cause pain.
Kneeling Shoulder Opener
While kneeling, hold both hands right between your shoulder blades. Make sure the right elbow is straight, pointing towards the sky. Slightly lean back, if your right hand is not reaching the left one. Stay here and take five deep breaths.
Stand on one leg, with both hands in prayer position. Bend your left knee, and place your foot on inner side of your thigh.
This is the ultimate yoga exercise to better the posture. You will have to take help from the wall or any other structure to stand initially. With time, you will learn how to balance your weight.