Answer: stippling

AnswerCrossword Clue
STIPPLINGSeurat technique
stipplingthe method of painting, engraving, etc., by stippling
stipplingSTIPPLE, to paint or engrave using dots or short touches
stipplingstippled work; a painting, engraving, or the like, executed by means of dots or small spots
stipplingto paint, engrave, or draw by means of dots or small touches