To be honest, if you can string more than a couple of words together to form a sentence then you will be already better than 90% of the people on youtube.
I guess the most popular vape personalities have their gimmicks (Rip - wacky/annoying, PB - long winded, Todd - sighing/oooing etc), so I am sure your assets will help bring in the viewers (along with some interesting comments...).
Obviously most men like to watch beautiful women on screen, but for me (not a breast man) there has to be something more to it.
Personally I would like to see blind taste tests of the juices, with decent descriptions of the taste along with comparisons to other 'well known' juices. There are too many reviewers that seem to like everything that they try, so it tells you nothing.
A rating system would be good. You could put your overall list in the 'about' page (I think?) split into categories, along with information about you personally in terms of what flavours you like, juice types, food etc, so that people can gauge whether it might suit their own preferences.
Anyway, I really hope you do well on youtube and get more views than PewDiePie (or something similar)