what gear did you use and what were the settings?
Thank you for the compliment. Let's see, what gear: 450D, 17-40mm f/4 L, and probably a polarizer. Although, under the lighting conditions, the CPF was probably of limited use, other than to prolong the shutter speed. Settings were 20 seconds at f/11 and ISO 100, 35mm focal length. I took it Halloween Evening of last year.
Also, edited in Lighroom, then to Silver Efex Pro 2, then back to Lightroom for a couple more tweaks.