Unfortunately I was not in the group that made the wreaths (I was busy managing the truffle making) so I don't know exactly how they made them. I did however manage to find a tutorial on YouTube that is pretty good.
Once you have the wreath the only thing that limits you is your imagination and wallet. I found some left over ribbon to make a huge bow for the bottom, bought a few cheap Christmas balls and used a string of plastic fall decorations to get a bit of colour.
I was very careful to use light weight things because we cannot nail anything into, or hook anything onto our door. It has to be held up with sticky tape!!
While decorating I found it best to hang the wreath up on a door so that I could see how everything fell (literally sometimes!). If using glass ornaments I would seriously advise you to put a thick blanket on the floor!
The whole thing is hung up by a matching ribbon (I ran out of left overs and picked up a new roll from IKEA, if I hadn't found it I would have just used wool) which is passed over the top of the door and stuck down with tape on the inside. Very, very heavy duty tape!
If your door can bear it the lights suggested in the tutorial are wonderful addition.