How to make a DIY photography bokeh for a camera

How to make that cardboard hood to assist you in making your own custom bokeh when shooting images.

Bokeh meaning "blurred or fuzzy" is a photographic term referring to the appearance of out-of-focus areas in an image produced by a camera lens using a shallow depth of field.[1] Different lens bokeh produces different aesthetic qualities in out-of-focus backgrounds, which are often used to reduce distractions and emphasize the primary subject.