Please listen to AI in the above post!!!!! Then you won't look like running firefly at 2am!!
As a prior Survival Instructor I can only Highly Caution you NOT to use any flame or high heat device within your tent, PERIOD!!! Not only is it possible (PROBABLE) that you will ignite/melt your tent due to the high heat rising directly above the heat source you will also be decreasing the available oxygen withing the confines of your tent along with building up carbon monoxide.
I have used tents in Minnesota, Wisconsin, Michigan, Canada & Alaska in the dead of winter. The lowest temp I was in was -48F in Alaska during an Exercise. The warmest it got for that 2 weeks was -28F. I never used any heat source within the tent and I too had dry boots & socks every morning, due to a reflector. I also had walls that I built around the tent to keep out the wind.
Anytime you are out in cold weather use the following to guide you.
C = Clean, keep your clothing clean, dirty clothing looses its insulating properties and acts as a path for cold to reach your body.
O = Organize & Plan, Set up your campsite so everything is in its place. Insure that your shelter entrance is not facing the prevailing wind nor 180 from the wind, place it 90 from the wind. Place windbreaks to keep the wind from directly hitting your tent/shelter.
L = Layers, dress in layers also sleep in layers. Use a pad under your sleeping bag. Only dress in your normal underware when sleeping. If you overdress in your bag you WILL sweat and then get very uncomfortable/cold at night and you will wake up!
D = DRY, Dress in layers/Sleep in layers so you ration your sweat. Don't sweat soak your clothing or let it get wet from snow or any other source. When you come into your camp, brush off any snow on your clothing before you get next to a fire. If not it will melt and you will get WET! When you get wet you set yourself up to get cold. This will lead to Hypothermia where your body cannot generate the heat you need and your body core temprature starts to drop, YOU DON'T WANT THIS TO HAPPEN!!
Please stay smart and winter camping can be the most enjoyable there is and one of the best things is there are no BUGS!!! Pack accordingly and check out some info on the web you will enjoy yourself.
P.S. - Be sure to be careful with the rocks they can be a killer, during one of my trips in Michigan another group of campers had a rock explode while they were gathered around the fire, one lost his eye, others were cut & burned and they lost two tents due to embers being thrown into them. Have fun but use your head & be safe. Knowledge is Power!!!