There are so many aspects of breastfeeding that we just don’t see in our society until we’re nursing our own children. And even then, we really only see ourselves and our own babies. It’s generally not socially acceptable to look at other women’s breasts or to carefully watch other women’s babies latching on. So if we’re wondering if we’re normal we don’t have anything for comparison.
The website 007b.com (double 0 seven breasts — you’ll have to read their explanation on the site for the title) works on normalizing breasts and breastfeeding. You can look at pictures of a lot of different breasts that have successfully breastfed babies.