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Incredible! How to draw a 3D staircase through an incredible optical illusion. It’s very easy to do, it will only take you a couple of minutes! ✿ Material used: White A4 Bond sheet, Sharpie brand markers in black and gray colors, and a ruler. —————- ✿ MORE: My Video List: Subscribe: ✿ MY NETWORKS: ◘ Pinterest: ◘ FB: ◘ Instagram: ✿ IF YOU LIKED this video, don’t forget to hit like, comment, share, subscribe and activate the bell 🙂 THANK YOU!