Refer to Idols. Draw a microphone in your left hand.
The way the microphone is held is a bit special. It feels like you can support it with the base of your thumb and middle finger and add the rest.

アイドルさんを参考。左手にマイクを描いてください。
マイクの持ち方が少し特殊です。親指の付け根と中指で支えて他は添える感じ。
