actually, there's an easier way to do the blitzes, rather than having to do all those fireball motions and streetfighter moves...
basically it's kind of a short cut version,
so instead of doing the firebal motion (down, downforward, forward...) for aura bolt...
you just tap the following- down, down, forward and it works like the fireball motion...
similarly here are other short cut motions
back, back, down, down, forward = fire dance
up, up, back, back, down, down, forward = air blade
back, back, up, up, forward, forward, down, down, back = bum rush
and those r the ones w/ the street fighter motions that i can remember... anywayz, if this isn't very clear, just write down the commands on a piece of paper and try them sometime when u do a blitz... it worked for me...