Lighting, sound, camera and surroundings, the most popular reviewers have all of these. Not having just one of those could lose you a whole group of viewers. People will put up with your quirks, if it at least looks like you know what you are doing. If you girlfriend is camera friendly, see if she wants to help get you started.
Set yourself up right and maybe you can promote yourself as a type of "grow with me" type of reviewer. There are a lot of people just getting into
vaping, and you can build a solid fan base of people that are at the same level as you. It could actually work for you.
Juice is so subjective and has so many variables, you may want to think twice about entering that arena.
Good luck though.