Your scheme is improving, it is getting better. Still has a way to go, so take your time.
Charles, how do you approach visual differentiation of the bottom?
Pay attention.
Don't fly so high or so far out. Learn to fly up and down the direction of the runway.
Avoid standing with others that speak out and talk to you while your flying. Especially if they are saying things like. "let me fly."
Sun glasses reduce light, choose them wisely.
Don't eat while flying.
Avoid combat with birds.
Choose colors that are visible.
Avoid overcast days.
The list could be endless?
Charles