Double joint making

I had so much trouble figuring this out but I think i got it now.

Flatten some clay and wrap around a ball the right size.

Clay wrapped bead

Cut ball in half with X-Acto knife

Two halfs of clay ball.

Slip and score two halfs together. Make two

Join balls together with small disk between

Roll out thin slab with rolling pin.

put pattern on slab and cut out shape

Lay cut out shape over back of joint and form into knee cap.

make slits and holes on sides for joints.

Here’s how someone else makes double joints