TK99:I just notice one problem with the shot.
No glowing plantary core fragments.
Well, two things to remember. This is a snapshot of about two frames per second of the actual sequence; the green energy dissipates during/after the explosion, so that glow is meant to be gone.
Plus, and I presume you mean no glowing planetary core fragments as in a molten core; well, you're incorrectly assuming that all planets have a molten core. That's really not true. We have eight planets and currently five dwarf planets in our solar system, and the majority of them do not have a molten core like the Earth. So there is absolutely no reason to assume that Alderaan should have one, and hence, if there are problems with the sequence, that isn't one of them.
I could add glowing fragments but it would take a massive amount of time, and for the reasons stated it isn't necessary. And also, there is the risk of over-complicating FX sequences. A New Hope doesn't have very complex FX sequences, and the last thing I'd want to do is add anything that doesn't work stylistically.