How can I make my voice higher female?
One simple exercise you can do is yawning. This will relax your throat and all those small details that determine your voice pitch. And remember, the more open your mouth is, the higher your voice will go.
Is it possible to get a higher singing voice?
Do Regular Exercises. Doing regular vocal exercises is the fastest way to increase your vocal range. Your vocal cords need to be strengthened over a long period of time, and if you have no routine in place, you're won't have much flexibility and it will likely take much longer to develop a greater range.