I bought a Styrofoam wreath at the Dollar Store.
Cut long strips of fabric about 3 inches wide then
wrapped the fabric around the wreath and hot glued some spots to keep it in place.
Made some fabric rosettes and a simple flower and hot glued them on.
I printed (on carsdstock) the "No Soliciting" sign at Anything but Perfect and covered it with clear tape (so it'll last longer). I don't have time to go have it laminated so this was my quick, free alternative.
To hang it to the door: I took an extra scrap of fabric and looped it around the fabric on my wreath and tied a knot.
To stick the sign on: I stuck a thumb tack in the back of the sign so it'll stay on the wreath.
*Add some hot glue between the sign and wreath to prevent it from flying off on a windy day.