Refers to the degree of lightness or darkness of an area.

Value.

Explanation:

Value:Refers to the relative degree of lightness and darkness of a take your cute creating various shades, tones, and tints.

so lets say you whant to paint or draw you would use valu to make 3D.

well seeing i am an artist and i actually did a self portrait; i will describe how i painted it.   i used acrylic on a stretch canvas about 4 feet wide by 6 feet tall. i painted myself smiling in a soft pink long dress, white tile floor sitting on a white couch with a table behind and a vase of gorgeous flowers.   i also had a round white hat with a soft pink ribbon through it laying on the floor and on the table behind me was a lit candle. i kept it simple but soft and romantic.