What you’ll need
Camera Lens with Small F Stop
Trace your camera lens onto the card stock. Add a small pull tab and the shape you want your bokeh.
Cut out the circle and the bokeh shape in the middle. DONT cut off the pull tab!
Fold up pull tab and push inside camera lens. Edges may need to be trimmed to fit.
I set my f stop to under 3.5 and other camera settings based on the lighting in the room.