Too flat of an approach with that high pitch prop will have your plane coming in hot. Try adding in up elevator to give the plane more of a nose up attitude. The more the nose is up, the slower the plane will go. There will be a point that the plane is coming in nice and steady at a slow speed. The nose high landings also look pretty cool. You might want to try this up high first so that you check out just how slow you can go before it stalls. You will also want to know what the plane does when it stalls so there won't be any surprizes!.