One good word of advice to Helena players. Learn to train yourself to use her 8p, 236p, and 6pBT strings. Those moves have extremely deadly secrets to them. ;)
Everyone's method is different with this. Sometimes I'll pick up the character for a week or two and use them in matches just to see what that particular character lacks and what they need to go on the offensive. Ofcourse like others I would like to play against a player who excels with that...