It's pretty cool, I like the snow and the plane's nice and crisp 

Although you are perhaps watching the Maule from the ground, it might look a bit more dynamic if the snow was going in the other direction.

For composites, I have little experience, but I think the trick to getting a smooth cut-out is to increase the size of the target plane as much as possible and make tiny incremental lines with the pen tool, just within the edge of the aircraft, avoiding the jaggie bits. Then, when you have the final image, which is smaller, the lines will all merge and create nice curves. Bigger the plane and longer you take = better the result. But other people know a lot more than me about composites, I prefer just 'enhancing' screenies....