Nice to meet you Jazzy Jade.
When you say "consistency of my music and sound" do you mean genre?
Are you also a songwriter? -If so, who are your musical influences?
As for the power of your voice, it is not about how loud or high you can sing, it is about the quality of your voice and enhancing the natural resonance and overtones. It is also about agility, musicianship and phrasing, and ultimately, connecting to your audience. First step is to sign up for some lessons. I will pinpoint if you have any gaps in your vocal technique and also where you are in your vocal journey.
As for "consistency in your music" we can discuss and clarify a "home" for your voice, which resonates within you, and exemplifies your musical influences. We can also discuss the song structures you are using, production elements, and arrangements.