Good singing originates from the sensations you feel. When you sing a note that is close to your speaking voice, you should feel it resonate in your chest. Put your hand on your chest and try it, but don’t push or sing too loud. Singing (and talking) should be done at a comfortable “medium” volume. As you sing higher you should notice the resonance starts to leave your chest and you should feel a sensation in your mouth and the top of your palate and teeth.  As you start to go even higher the resonance shifts to the back of your mouth in the soft palate. This is where a lot of singers try to adjust their sound by reaching for those notes. Instead of “reaching” for the notes you should approach them with ease. Yes, the sound will be lighter but it will be true. Learn to “feel” what your voice sounds like in this relaxed state. This step is necessary in the process of creating a balanced sound that connects your entire voice from low to high.