VERY NICE work, but once again, this video should be called "How I MADE Magic Trick with Magic Cars..." If you include no instructions, then it is not a tutorial.
Do you need instructions to cut and paste some cardboard pieces? Need orientation about materials, or glue's brands? There is no need of further explanations, the video is pretty clear itself. Maybe are you in need of measurement advices? Do some research, Magic Cars are everywhere on internet, you can find it easily. (5x9 cm) I don't understand your claim.