Quality recordings. Take your time. Don’t be afraid to record another take. There’s a one-line piece of advice for everything, and sometimes we’re almost told to expect to record quite a few takes before getting it right. Regardless of what your style or preference is, don’t delete that first take. It may not be musically perfect, but there’s often a certain vibe in the first take that’s hard to reproduce.
You can read more about it here: http://therecordingrevolution.com/2013/01/21/why-your-first-vocal-take-might-be-your-best/