Head Ramping
When you've shifted your hips back and dropped your ribs down for a more neutral and vertical alignment you may find that your neck and head tend to thrust forward. This may already be an ingrained habit from how we sit and how we read/look at computer screens, etc. Often people tend to tilt and rotate their head back in order to look straight ahead, but that doesn't fix the problem of the weight of the head pulling the neck and upper spine forward. When the head and upper spine are toppling forward, your walking gait may adapt as if your legs are trying to catch up to the top of your body. This results in a falling forward motion.
So a great habit and exercise to develop is "head ramping". This can be done at any time, but especially while walking. Like on a ramp, you think of your head as sliding back and up. It's helpful to think of the chin sliding back towards the throat as the top of the head yearns upward. Make sure that the ribs don't come up as you do the head ramp. That way, you'll lengthen the back of the neck and elongate the upper spine, and balance your body over your feet for better balanced walking.