-check that baby opens mouth wide and produces a good latch, doing so will draw out the nipple -make a nipple by using "breast sandwich" technique to allow baby to latch -find a nursing position that allows you to support your breast and baby's head while you figure out on the correct latch (usually the laidback breastfeeding position) -stimulating nipple by using cold compress to make the nipple protrude -use a breast pump to draw out your nipples before breastfeeding -wearing breast shells or nipple shields http://www.askdrsears.com/topics/feeding-eating/breastfeeding/common-problems/flat-or-inverted-nipples
I was told by nurses and my massage lady that I had "short" nipples, but my baby latches on perfectly well. It's not impossible. You can make a C shape with your fingers, flatten the breast and position it in his mouth to make it easier for him to latch on.
thanks