Very very nice shots seems like you took a lot of my advice on angles to heart. really love the sense of speed the smoke trails lend to your images. my big critique though is that you had your shutter speed too high when shooting the piston engine planes, a prop stopped on a piston engine plane like that looks dumb. Just a tip for next time try using shutter priority and setting it to 1/60 or 1/90th of a second that way you get the blurred disc effect and it looks a lot more real. Other than that great work and good shots you got there.