I disassembled the fall wreath I had made to be able to reuse the wreath base. I made the wreath base long long time ago, it's just few twigs rolled to a wreath form and it's not even perfectly round but it works fine.
I cut the pine and thuja braches into shorter pieces.
Then I take a small bundle of branches and form them to a fan of sort before I place them on the wreath base.
I roll wire on top to hold the braches, the wire needs to be pulled tight, but usually one round is enough. Then repeat again and again until the wreath is done. For more detailed instructions check for example this site.
So once I was done I hung the winter wreath to it's usual place next to the front door. I like wreaths without much decorations, but you could add pine or fir cones or berries or what ever comes to mind.