I don't have the grey scale card. Just used some particle board covered in tracing paper and lined up with permanent marker, I managed to find a nice sized flat mirror from one of my eyeshadow palettes to finish the shot board. Luckily I have an artists easel and a tripod for my phone. Even without everything mentioned in this course the pictures turned out true to color and clear. I see there is some practice and more fine tuning to do but I am encouraged by this result. Pictures were taken with a Samsung Galaxy A53 and lighting is VIJIM white light attached to tripod.