study of vision with drawing

values of shadows make 2d to 3d, also notice the mirror effect for water
and yes I drew this

use of size and overlap to convey distance

this is an apple, there are many like it but this one is mine



watching the object to copy it and its values

values for shadow, core shadow and shadowed surface

use of shapes as skeletons for objects



the tree started as a cylinder and a circle

nose built from box, notice the boxes angle tho

this are forms, 3d representations of simple shapes.
triangle -> pyramid

turning shapes into forms using values and line extentions

1 point perspective :





2 vanishing points perspective