I solo winter camp. My only advice is know when to call it a day. I am not interested in impressing anyone with some tale of epic survival. Seems kind of pointless unless you intend to write a book or get a reality tv show. Bad weather, more than anything else, is your enemy.

I also solo bike toured and hiked in New Zealand with no bike touring experience and having not been backpacking in years. It isn't rocket science. Get some decent gear, use some common sense and you'll be fine.

I usually bring a book. It gets dark early in the winter. An MP3 player can be nice company as well. I loaded some podcasts on mine for one trip.