Love the advice above; I’d add a simple exposure ladder: record one full take a day for a week then send your best to a friend, then sing one verse live for one person, then two, then go. For quiet, neighbor-friendly warmups that steady a shaky onset, do 2–3 minutes of lip trills or straw phonation into a cup of water, then soft sirens through your song. On the night, sing closer to the mic than feels natural and keep your knees loose; hearing yourself clearly and letting your body move a bit knocks down a lot of tremor.
