The last one looks wrong somehow to me mate. Is it two different photos combined or something? The tree on the left has a firework clipping straight over it which just doesn't look natural at all to me :S
Rest of the shots are pretty damn nice though. 25 especially is rather good!
Nope, it's one shot. The fireworks display was run from his driveway (no I am not exaggerating) and so the firework clipping infront of the tree is because that's the way it fired
I dialed down the exposure on the initial shot then used the brush to bring up the exposure on the house, that is probably what is throwing you off