The Montgomery's Glands
 in a front view allows you to see them more clearly. You can see three very distinct Montgomery's Glands just below the nipple, as well as the ones that are pointed out by the lines. These will be more prominent when the breast is cold or sexually stimulated.

The Areola
in this image is difficult to distinguish, since it's coloration is very close to that of the skin of the breast that surrounds it. The smooth texture seen in this view indicates that the body is warm. The Nipple and Montgomery's (Areolar) Glands become more prominent and the Areolar skin temporarily takes on a wrinkled texture when the person is cold, sexually excited, frightened or otherwise stimulated. The areolae on one woman may be as small as an inch in diameter and on another it could cover one half of the breast. Pregnancy and breastfeeding usually causes it to take on a darker pigmentation and become larger in diameter.

Blood Vessels
These tend to become more visible at certain times and may always be present in some breasts. Pregnancy and lactation can cause them to become more visible while the breast is getting ready for (or maintaining) the process of producing milk. Breasts have a relatively small amount of blood vessels, requiring more Lymphatic Vessels to do the task of eliminating the toxins and waste products from the breast cells.

Optional Views
For more clarity, some other views of the exterior features of the breast are available here.