For propagating plants in the winter hardwood cuttings are the best way to go. I find that propagating through hardwood cuttings is much easier and more carefree than taking cuttings during the growing season.

When taking hardwood cutting I use first year growth that is around 6 to 8 inches in length. The cuttings should be about a pencil thickness if possible but that isn't a hard and fast rule. I do use rooting hormone on the cuttings to help them along.

The procedure is the same for all sorts of plants so you can use this video as a general guide on how to propagate hardwood cuttings. In the video I did viburnum, peach, plum, and crape myrtle cuttings.

Update:
Unfortunately squirrels destroyed the cuttings from this batch of cuttings and I was unable to do a follow up video. I've used these same techniques repeatedly to make cuttings of various plants and wrote about those successes previously on GrowingTheHomeGarden.com. Feel free to peruse that site for more information. Most of the content I do here on YouTube is designed to support the website content on Growing The Home Garden. Essentially I'm saying I've done this before and you can find it there too. I've written that website since 2007 so there is a lot of content available.

Here are two of the specific plants featured in this video with rooted results:

Plum Hardwood Cuttings: https://growingthehomegarden.com/prop...
Viburnum Hardwood Cuttings: https://growingthehomegarden.com/root...