Experiment and shoot a lot.
Take a ton of photos and play with your settings, he advises. "The basic mistake [that most people do] is that people see something they like and take a photo and walk away," says Alvarez. "You can experiment with ISO, exposure, and shutter speeds to let more light in — especially when the light gets weird. That does require a lot of experimentation and that means shooting a lot. It just requires a lot of images to get one that's sharp, so shoot and shoot and shoot."