If you will learn to react to the situation created by the shot, instead of reacting to the ball after it is hit, you will be able to raise your game immediately. Let me give you an example:
You hit a lob over the netman deep into the corner. What do you do? If you both move to the net, because of the time allowed by the lob, then react to the shot, a good return lob will put the team in trouble. Lets react to the situation instead. You have created a lob situation with your return. In other word, the opponents should lob the return. Realizing this, I send the ball side player to attack the net, so she can put away any poor lob and can also poach a poor return. But I send her partner to the middle third of the court and back just behind the service line, before the ball is hit. Now the team can destroy a poor shot and still cover any great lob return effectively. React to the situation before the ball is hit, do not just react to the opponents shot.