The normal store bought bindi can be made beautiful by adding extra touch.
Ready-made store bought Bindi
Colour Kumkum (available in fancy stores)
First stick your ready made bindi
Take yellow colour and keep dots as shown in pic. Three dots at bottom and one on top.
Draw small lines at the end of dots using Eyeliner.
Your normal bindi is turned beautiful and attractive. Replacing yellow, you can use matching colour to your dress.