Top 10 Chess tips - what do you think?

A top chess expert has come up with these:

1. Look at your opponent's move.
2. Make the best possible move. (When you find a good move look for a better one!)
3. Have a plan.
4. Know what the pieces are worth.
5. Develop quickly and well.
6. Control the centre.
7. Keep your king safe.
8. Know when to trade pieces.
9. Think about the endgame.
10. Always be alert

Which ones have you used recently? Which one do you think is the most important? Can you think of any more to add?

For more on this go to: http://www.uschess.org/beginners/ten/