I would do it differently. But you also don't say where you are- I do snow, lots of snow, freezing rain, and so cold the whimpering on your jacket is the thermometer zipper pull wanting to come in where it is warm. *laughs*

I'd do a snow trench, and use the debris under it and on supports to make a roof. Then do a cul de sac a few feet away with a platform for a small fire, which is used for heating water to go in the bottles. Those go in the shelter with me.