Don't ASSUME you know what your partner's needs are - and don't just treat them like you like to be treated!
Take the time to really understand how they rock and what they need to play their best!
I have played with partners that like to talk a lot and those that don't! The more comfortable your partner feels on the court the Bette they will play!
Before the match have some pertinent questions ready to ask them! If nothing else - it shows that you care!