Is it possible to make your talking voice naturally more high pitched?

I’m a girl who’s used to talking higher, but can also fall really low, so yes. As for singing, though, it gets trickier. Seen advice many many times that getting a vocal coach and doing exercises is best. You can sing in your highest head voice, but it‘ll be weaker and doing it improperly can lead to strain. Most important rule is stop when your voice breaks or hurts!