I wait patiently until dusk, then I set my camera to F22 at shutter speed of 10 minutes and lowering the exposure compensation, then I get ready to capture the unseen motion.
The kind of photography you’re starting to get into is called light painting @Mekury and it can be a lot of fun. If you introduce moving light or fire you can make some spectacular images. I would suggest that f22 is not a great setting. Most digital cameras especially with consumer grade lenses suffer at f/16 and above. Stick to around f11 at most - you can experiment to find the best for your particular sensor and lens combination. I would suggest a shorter exposure and set the shutter to match the ambient light so that you get richer colour in your images.