Get down on your knees and place your tinder underneath your twigs. Place yourself between the fire and the wind. If there is a lot of wind, use your logs to create a barrier which will stop the breeze from buffeting your fire. As the kindling catches, proceed to place larger and larger branches on top of it until you can no longer see the flames. Be patient, and don't add too much at once. Make sure to leave plenty of gaps for airflow you don't want to suffocate the fire.

Summary:
Protect the fire pit from the wind. Stack more branches on the fire.