I think you look cute too. 🙂 You definitely have feminine features - a small chin, smooth jawline, good shaped mouth, and your nose looks fine to me despite what you say. A little large in profile, but I've seen similar noses on bio-girls. Maybe your eyes look a bit small on your face without shaped eyebrows, but there are tricks with makeup that can make them look larger and more feminine. In the first photo you posted, your neck seemed thicker than typical, but it's not a big concern. Your posture and mannerisms definitely look female to me, and especially from the back it looks like you have a female shape -definitely a girl's butt, as you said. The butt/hips/legs look very female to me in fact, that in combination with your mannerisms makes it easy for me to see why people are calling you ma'am from the back. The shoulders - lots of women have wide shoulders. Lots of models have wide shoulders in fact, and the continuation of shoulder pads in women's wear shows they're often seen positively. Don't worry about them.