For clarification: Tilford was a road racer LONG before mountain bikes came along.

One not yet mentioned: turn once. Don't divide the corner into several small turns. Learn to pick your line and stick to it. That will keep your speed up.

Also remember that centrifugal force will take crashes outward. Try to take the corner on the inside.

And throughout the race: always use the ol' SIPDE process:
Scan the scene
Identify the problems
Predict what will happen
Decide what to do to avoid it
Execute.