How to draw a levitating stone ball

Drawing a realistic stone sphere. 3 dimension stone ball. Stone texture. Trick art the levitating stone ball. How to draw a realistic stone ball.
Mixed media. Materials used:
Pastell paper: light gray.
H graphit pencil (Derwent)
Markers: Letraset PROMARKER
Black and white charcoal pencil.
White gel pen.
Grey Stabilo marker 0,4.
Black Faber - Castell pen 0,7.
Soft eraser.
Music:
Heavyweight - Ethan Meixsell,
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Készítette: Vámos Sándor
By Vamos Sandor.
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