Using a 50 per cent off coupon for Michael's, I bought a wire wreath form and some floral wire.
You start by bunching the mesh and tying to the wire wreath with the floral wire. Billow the mesh and tie another bunch to the wire wreath making sure it is very close to the first tie. This makes a nice tight billow of fabric. As you go around the wreath try to make sure the billows are consistent so the wreath looks even.
I also bought some Christmas balls and tied them together with wire. I placed these throughout the wreath.
The store also sold pre-made ones for $30 or more, but mine only cost $12 because I did it myself. There are some Youtube videos put out by the companies that make the product and I found these visual tutorials very helpful.