How to Draw a 3D Cavern - Optical Illusion

This is Monkey D. Luffy One Piece Anime. This drawing was requested by a subscriber channel. Hope you like it and please leave your comments. Thank You. If you have questions, we will gladly answer them. Thank you It took me: 2 hours MATERIALS: Bristol 300 Strathmore paper Pencil HB Watercolor WN Prismaclor Verithin Signo gel pen

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