The document provides 10 tips to improve speaking voice: 1) Breathe from the diaphragm and use breath to punctuate points. 2) Use pitch modulation to keep listeners engaged. 3) Find the appropriate volume and stay at that level. 4) Moderate your speech pace so listeners can follow but don't lose interest. 5) Practice articulating to reduce mumbling. 6) Practice your speech in advance and mark breathing points. 7) Loosen up before speaking through stretches and movements. 8) Stand up straight to allow full lung capacity. 9) Record your voice to determine the best way of speaking. 10) Practice breath control through deep breathing exercises.