How can I properly counter sink a screw?

To properly countersink a screw, you need to first drill a pilot hole that is slightly smaller than the screw's diameter. Then, use a countersink bit to create a wider hole at the top of the pilot hole. This wider hole will allow the screw head to sit flush with the surface of the material. Finally, drive the screw into the countersunk hole using a screwdriver or drill until it is securely in place.