Do not rush into the vocal booth before you are ready. Standing in a studio about to record vocals can be very intimidating for new singers. So practice a lot before recording.
Try recording yourself prior to hitting the studio and listen back to note what you like and correct what you don’t like. Establish the right key and smooth out any range difficulty. Your vocal technique should be good enough to avoid wasting time in the studio with lots of takes and auto-tuning. That also means it’s better to have your lyrics and melody memorized so you’re not fumbling around.