One of the things I often need to think about is taking shorter strides to have better running form. I have a tendency to go way too long. That's harder on the body and can cause a braking action from your front foot if your body isn't over it already. The other thing that needs to change is higher cadence, otherwise I would just slow down. Like biking, most people could stand to bump up their cadence when they run. Flight had a great running form coach so she could pass on some of her lessons. (Wish I could hear them!)
Keeping the toes to the sky and waiting for the ground to come to you rather than reaching for it with your toes. Allowing to you land mid foot.
Using the arms. Moving them hip to heart, but when your learning think about moving them up closer to your face and all the way down to your hips. Like you are trying to pull and big heavy rope over your shoulders. The arms help drive the hips. Hips need to move so that your weight stays centered and over your feet.
Slight lean forward.
Slight bend in the knee