How do you dart in sewing?

Fold a piece of fabric in half. On the fold, make a mark about 4 inches down, or however far you want your dart to be. Begin sewing from the top, about 1 inch away from the fold, and sew straight toward your mark (you will be sewing diagonally). Don't back-stitch at the tip of the dart, or the fabric may not lay properly. Usually, if you are following a pattern, this process is explained in the instructions.

Darts are commonly used in blouses, skirts, and jackets.