Shape the clay with your fingers until you`ve got the shape you want on you knobs. I rolled my into little balls, before shaping them in different circles. I wanted them to look rustic, not perfectly round. After shaping them I stamped the clay lightly with different patterned stamps.
Shape back piece of knobs by rolling a sausage shape and cutting it in the length you want.
Screw (dont push) the screws through back piece
The back pieces should look like this before they are fastened to the knob
Attach the back pieces to the knob using a few drops of water on your finger tip.
(A couple of my back pieces fell off during baking, I glued them back on with superglue)
Bake the clay as instructed and let the knobs cool down and harden.
I painted my knobs, as white clay tend to be a bit dirty during the making.