The use of bokeh in photography is very common. If you are unfamiliar with the term, it is simply blurring out the background of your image to keep the focus on your subject. This is typically achieved by using a wide aperture and fast shutter speed. It's an extremely useful tool and, as we'll see here, you can even manipulate it to create interesting patterns! So, let's get started!
Here is my star! I cut out a 4"x4" piece of black construction paper and then marked off my center point. From there, I had to do a little math to see how big I needed to make the star. It needs to stay the size of the aperture. This was calculated by dividing my focal length by my widest aperture; in this case 50mm divided by f/1.8 gave me approximately 28mm. So I marked out 14mm each way from the center point.