as most of the ppl here already said...use different mods, and in the beginning use "c" to hold all...just use your improvisation to kill the other one as fast as possible,if you become better and such,don't use "c" anymore but try fighting in relax all
the moves will be harder to block,smoother in replays,but harder...so you have to train alot for them...
Best is to train in all sorts of different mods,who knows maybe there'll be a GMtourney of a mod you trained it...