The CGI ships and textures look good - at least as good as what lucas gave us in '97. But an action shot to see how they move would be much better to critique. Are you replacing/recreating both the flyby shots with your CG versions, or just the one from the front?
Maybe it's just me, but the tips of the lasers with the "scoopey" parts (that look like a cross section of a radar dish) look a little big.