While your son is holding the plane up, have him shriek some engine noises and run around while holding the plane.....you stand a better chance of getting it back intact (unless he trips).

I agree with all the threads. There's nothing that helps landing well more than landing LOTS. Boring holes in the sky is fun, of course, but a good greased-on landing is a thing of beauty. If you're alone at the field, just keep landing!

Nice practice is:
Touch down
Gas it and take off again.
climb straight out to a couple hundred feet
Hammerhead turn (or whatever they call it - go vertical and before the plane stops, kick in full rudder, do a 180 and head back down vertically)
If you did it correctly, you'll still be in line with the runway.
Land
Go back to step one.

This gives you practice with lining up, landing, throttle control, rudder control and all kinds of stuff.

I never had a plane with too much power. I mean that literally - I'm not a speed freak. When you take off, leave the throttle on (I rarely used full throttle on take off). Climb away, then still with throttle on, go vertical. My planes would run out of poop and begin to stop. The propwash, when you throw in full rudder, will turn the plane quickly. Then chop the throttle and get ready to land.

*grin* have fun. Maybe put some light colored trim on the leading edge of the wing also, to provide contrast and depth when the plane is below the tree line.......