1. A method of drawing on a digital canvas, the method comprising: drawing a trajectory on a digital canvas with a pointing device, wherein the trajectory comprises a plurality of spaced points, and wherein each spaced point comprises a plurality of characteristics, comprising a geometric profile, a depth, and a color if a color trajectory or an intensity if a monochromatic trajectory; and adjusting at least one of the plurality of characteristics for at least one of said points by manually controlling a speed of the drawing, wherein a faster drawing speed results in spacing between two successive points of the plurality of spaced points that is greater than that resulting from a slower speed.