easy 3d drawing & amazing hole| 3d trick art on paper

Hello, in this video I try to draw the trick of drawing a 3D pit on paper step by step for beginners.
Using perspective, I created a square geometric shape and depth, based on vision error and optical illusion, I drew the ladder.
By slightly changing the angle of view, an amazing 3D pit appears.
The result of the painting is delightful and inspiring.
Use: pencil, black marker, black and white charcoal pencil, blue colored pencil, brown colored pencil,red marker
Painting time: 30 minutes
#drawing
#easy_painting
#trick_art
3D painting, 3D art,art drawings, 3d cube, trick art, on paper, easy drawing, easy painting,
Pencil art,marker, art by Ati, sketch, ladder,red ladder,stairs