neat stuff.. a few pointers:
make your directional blur tile
dont use cosine interpolation for your subplasma, use a catmull-rom spline instead.
use a slider for random seed, clicking the rand++ button gets tedious
add mapdistortion
you really need bilinear filtering for distortions.
submit your entry before the deadline

(as if that EVER happens on a demoparty lol)