First child I'm breastfeeding..

I have a 16 month old and a newborn who is just born yesterday.. My first born was not breastfed but my daughter is breastfeeding. I feel like whenever I'm positioning her for her feeding I struggle like I'm afraid I don't know what I'm doing our Luke I'm going to break her. Obviously I know how to hold and take care of a baby but when it comes time to breastfeed I'm so scared of hurting her like I'm not doing something right.. Is this normal? Have other mom's felt like this?