Step 6: A reflector
Then cut a straight line to the centre, and a cut a small 1cm circle out of the centre. You can roll it around now, like one of those protective collars vets give to animals to stop them injuring themselves even more. Tape the cone together at desired shape.
The reflector is attached to the wood using a small piece of cardboard that has and angle cut at the same angle as the reflector. This is taped to the reflector and to the wood.