Just a quick Critique here, Fireworks are some of what i do best.
Justin - Longer exposure, there are barely any fireworks in the shot. But good angle.
Ryland - Nice wide shot of the Wishtinas and teh castle effects, good color but blown out a bit much for my tastes.
Pisco - Move back some towards caseys. Youre too close to the castle to get the fireworks overtop of it.
CEO - Tripod and higher Fstop. Streaks seem shakey, looks handheld. Too much smoke IMO, also double check your white balance, very tungeston.
wannabe@dis - start that exposure about one shell earlier and hold it open for both of the 12" morters. You get the insane golden flower effect that way, even more dramatic then you have there.