From the self breast exam site I found: here is the linkage
SBE
In front of a mirror
Step one is to look for surface changes. Standing undressed from the waist up, visually inspect the breasts for changes in appearance, size, position or shape. You should also examine the border underneath the breasts and check the nipple for discharge.
Suspicious changes may include skin puckering, dimpling, discoloration and soreness.
Repeat visual inspections - from both forward-facing and side angles - with your hands at your side, on your hips and behind your head.
In the shower
Step two involves feeling for unusual masses under the skin. Using soap and the flat part of your fingers to create a smooth surface, feel for lumps and thick tissue masses in your underarm and collarbone areas. Start at the bra line and continue moving up until you reach the collarbone.
Lying down
In this final step, lie down and place a small pillow under your shoulder, with the corresponding hand behind your head. Thinking of the breast as a clock, place your fingers flat against the upper portion of the breast and continue around the "clock face" until you've made a full rotation. After the first rotation, move one inch toward the nipple and repeat the process until you've examined the whole breast.
Lastly, place your flat fingers on top of the nipple and feel beneath it for any changes.