When creating bindis the forehead and the space between the eyebrows are two important considerations other than the face structure of course. The more the length of the forehead the longer the bindi should be and vice versa. Similarly the more the space between the eyebrows the wider the bindi should be and vice versa

Round Face Structure

Features: The round face is almost as wide as it is long. The greatest width is at the cheeks and facial lines are curved.

Small and long Bindis are ideal as they help to create the illusion of angles. Avoid circular and squarish Bindis (width).

Oval Face Structure

Features: The forehead is wider than the chin, cheekbones are dominant and the face tapers gracefully from cheekbones to a narrower, oval chin.

Well proportioned Bindis of any kind look good, avoid extremes, as in too long or wide to maintain the natural balance and harmony of the face.

Square Face Structure

Features: It has a squared forehead about the same width as the cheekbones and jawline. The dominant feature is the squared jaw.

Delicate, long, circular, with more curves would be the best option to elongate as well as soften the squarness. Wide and geometric shaped Bindis are definitely a taboo.

Triangular Face Structure

Features: The triangular face has a jawline wider than the forehead. Cheekbones are broader than the browbone and narrower than the jawline.

Bold bindis with a good width would help balance the face. Small or long bindis may not help to minimize the jawline.