Clover and Echo are the bestest of sisters! They cuddle, they talk to each other, and they go at it like it's no tomorrow!
Just remember that there is always fun in ambushes and great fun in pouncing. Just be sure to even it out with equally sweet moments, like rolling on the floor and being cute for them even if they ignore you and grooming them like a good big brother.

Or you could just scare them shitless and be the EVIL BIG BRUTHER! o_o

Teehee! I wanna see pictures!