In this project, I left the shutter open to capture all the light shown over a period of time that I could choose. Then I took a flashlight to “draw” different patterns and objects. The more I left the shutter open, the lighter the picture was, and the less dramatic it was. When I painted a curve, I found that the faster I moved my hand, the smoother the line was.
https://drive.google.com/drive/folders/1LY7Q-UzufQxStqWpNEvp37gOPwSssShP