What you need:
A4 paper
Pencil
Phone camera
How to make:
On a paper draw n oval ball. Imagine a ray of light is falling on the ball from the left side and accordingly shade it. i.e. darker shadow on the right side of the ball and lighter shadow on the left side of the ball. On the bottom right of the ball, imagining further, draw a little shadow of the ball itself falling on the ground.
Now with a scissors cut out the white paper from the top half of the ball. Your drawing is now ready.
With your phone camera, view the drawing moving the phone around, you will get a 3D effect.
