Keep your matches in a metal match safe as plastic can freeze and break if dropped. Gather twice as much fuel as you think you'll need for fires. Carry tinder from home. It may be hard to find in snow or wet conditions. Gather your wood and tinder for the morning fire in the evening so that you will be able to start the fire quickly in the morning.
Space blankets make good wind shields only.
The metallic properties take over the insulation properties in cold weather and become cold conductors. Carry extra plastic bags in cold weather. They can be used as personal wind shields and ponchos by slitting a hole in the top for your head to go through. Carry extra matches because the more you need a fire to warm up the less likely you will be able to start one easily. Flashlight batteries are effected by cold.