Standing with proper posture helps to decrease stress on your spine and joints. Avoiding excessive flexion, or bending, in your mid-back will reduce your risk of compression fractures.
Get into a comfortable standing position with your feet about hip width apart. You can use a mirror for visual feedback if you find it helpful.
Imagine you have a string pulling you up from the top of your head, lengthening your spine. At the same time, push the floor away with your feet as you imagine yourself growing taller. Gently squeeze your shoulder blades together, making sure you are not arching your low back as you do so.