Okay, so, today my brother and I went shopping together for the first time in years. At home my voice is more relaxed/low, but when I go out I of course make my voice much more female-sounding. Whenever I'm done talking with someone, my brother tells me my voice is horrible! It was really upsetting. He said it's way too high and weak and has no intonation/sing-songiness. You know, like the ups and downs that voices can do. He also said it sounds like it breaks when I go too high. Other people tell me my voice sounds good though. It's really upsetting hearing that my voice isn't good. How do you find more of a happy-medium in the voice? You know, so you can still sound female, but have a pretty strong voice with the melodic sing-songiness?
Practice, practice, practice! Don't give up, you can get where you want to be with practice!
You do need to have constructive criticism, so you can work on the things that are weaknesses. Do you have a voice coach? Do you record yourself speaking and listen to it?
Strong voice, I don't know. My voice has always been really weak. But sounding natural, yeah, most probably. For one, I think you should try to speak in a feminine matter all the time, not just when you go out. It'll make your practice much more effective. Also, singing, even if it's hard, even if it sounds horrible in the beginning, can help a lot. By working on really hard things like songs, you'll make yourself better at easier things like speaking. A bit like a hockey player will lift really heavy weights to be better at manipulating their light hockey stick and puck.