I got the idea from here: http://fitzbirch.blogspot.com/2012/11/knitted-door-stop.html

It’s just a knitted covering using the brick stitch and sewn over a brick. For the big rose, I used this pattern http://www.freecraftunlimited.com/crochet-roses.html with a beginning chain of 35 (it should have been 34, I had one extra). And for the little rose and leaf, I used this one: http://attic24.typepad.com/weblog/may-roses.html