Start by taking a long stem that has very few side shoots and is not too woody. Make into a circle overlapping about 15 to 20 cms (6 to 8 inches) on each side. fasten the ends with a piece of plastic covered wired.
All you do now is weave/wrap more stems in, you should be able to position them in the gaps between the stems that are already there so shouldn't need to wire them in, however, use more wire if you think you need it. Trim any stems that are too thick and woody as they won't be as pliable.
I will decorate this with ivy and holly from the garden in a couple of weeks when I am ready to hang it, and maybe a bauble or two.
Not a bad afternoons work, creating something from nothing.
Don't forget to enter my Christmas give away details on this post