Step 1: Look in the mirror, cross your arms and observe the shape and contour of both breasts for any abnormalities. Step 2: Raise your arms and observe the shape, skin, nipples and contours of both breasts for any abnormalities. Step 3: Squeeze the nipples with the thumb and index finger to check the fluid flow. Step 4: Lie on your back with your shoulders slightly elevated, raise your right arm and touch the contralateral armpit and caudal lobe of the breast with your hand for any lumps. Step 5: Touch the contralateral breast with your hand, turning in small circles, covering all areas as much as possible, feeling changes under the skin with light pressure and deep breast tissue with heavy pressure.