Mark Weiss of the audioprofiles.com breaks down and shows the difference between 6 different microphone positions. In this video, he compares this 6 positions based on voice.
The first position: Straight into the microphone
Mark places the microphone about 4 to 6 inches away from his mouth and aimed straight to his mouth, from this position the microphone is able to capture everything from the low end to the nasal quality of his voice. With this capture, you can never go wrong. The only drawback is a little jumping in the low end as there is a tendency for the microphone to be knocked off every now and then.
Watch the full video here: https://theproaudiofiles.com/video/microphone-positions-compared-on-vocals/