You place three fingers on one spot of the breast tissue and you make a circular rubbing motion, without lifting your fingers so you don’t miss a spot. This enables you to feel the structure of your breasts under your skin. You can change the amount of pressure from light to hard. Use different motions:
Encircle your breasts clockwise. Start on the outside with a large circle and make the circles smaller and smaller, ending at your nipple.
Start with your nipple and move outward in s straight line, like cutting a birthday cake.
Move up and down in a zig zag pattern..

Also feel your armpits, the area above the breasts up to the collarbone.