Be mindful of your actions to help speed up play. This means being prepared, minimizing delays, and working together to keep the game moving.
The Friar's Briar web site has a great page on curling etiquette, and is a recommended read for all members.
Let's all remember that "Thou shalt not heap blame upon the keepers of the ice for thy losses. Neither shall ye blame the makers of the rocks. Blame not thy team-mates, yet look inward to thyself for fault."