Well you could try some training techinques, head on over to the Dojo and find out the properties of the key moves, in other words see what launches, what move gives you which stun, which moves can sustain a juggle and which moves are good enders.
From there just mix and match these moves together, you can come up with your very own set ups and juggles.
I accidentily completed Kasumi's Combo Challenge on a whim so I can't help you get started on which moves do what.
However as the others have already mentioned.... its up to you to try and change your patterns mid match, knowing the properties of your moves will prevent you from accidentily launching or knocking over your opponent prematurely... you can do it buddy: Evolve in the Heat The Battle.
LOL.... Its actually been two months since the last post, am I too late ?