Decide what kinds of things you're going to make videos on *before* you do them. Put some thought into presentation and any personal "rules" you want to set for yourself before you turn that camera on.
Some of your style will develop naturally and that's fine, but the reason I go *back* to certain reviewers is I know what I'm getting.
Mark Todd (toddecigreviews): A nice long leisurely video about equipment I'll never afford, but with topnotch camera work so I can see everything. Todd taught me how to build coils on anything ever, and helped me understand how to evaluate for myself whether a mod is well-designed or not.
Twisted420 (VapingwithTwisted420): Gear I actually can afford, with good camerawork and a laid back, genuine delivery style. I don't expect Twisted to give me a lot of minutiae about the build quality, but I do know I can trust him to tell me if anything is "jacked up!"
Phil Busardo (pbusardo): When I want to know everything there is to know about a particular device, I turn to Phil - particularly when it comes to VV/VW mods. When I'm hunting for a new juice, I turn to Phil. His tastes in juice are very different from mine, but he is objective enough to "thumbs up" juices for what they are, whether or not they are in his flavor profile, and I find that useful.
Pegasus (Pegasus1337): Peg's videos are more class than review/entertainment. Want to know what gauge to use to wrap a particular coil, how to build a weird looking atty, why your wicking isn't working, how to shop smart on Fasttech, or how to tell a good bit about how something vapes just by looking at it? Peg has you covered.
Damian (A Bloody Good Vaping): Like Todd, he reviews high end stuff I'll never afford, but he's entertaining about it, and I like seeing what's out there.
Ruby (Ruby Roo): Reviews a little bit of everything, has nice camerawork, covers all the high (and low) points at a good pace. When I need a quick 15 minute "nutshell" on gear or juice, I check Ruby first.
These aren't all the "good" reviewers out there by any means, but they're the ones *I* subscribe to, and why. Depending on what I'm looking for - info, entertainment, quick review, long review, etc - I know who in the above list is *most likely* to have what I want.
When I'm looking for a new vape reviewer (or vape vloger, whatever), nothing makes me turn it off faster than someone who clearly doesn't know what kind of message they want to get across.
Example: So you're reviewing a kayfun - great. Original or clone (Or both)? Which version(s)? Where did you get it? Are you going to build it? If you're not going to build it, do you have a plan for how you're going to fill that time, or are you just going to vape it for 20 minutes while stammering about how good it is? Are you going to be funny, serious, casual, businesslike? Do you have a standard list of things you'll cover from piece of gear to piece of gear?
So yeah... put some thought into how you want to structure things and what *kind* of videos you want to make... and then stick to that format. I sit through Todd's long pauses with no trouble because a) I know he does that, so it doesn't bother me, and b) I know what comes next. I don't mind that he gathers his thoughts on camera because I know how it goes... "This was sent to me by _____ and it cost £____. And it's (adjective, adjective, adjective). Let's change the camera and go down for a look..." etc. I am forgiving of the moments when he loses his train of thought exactly *because* I trust him to keep his format familiar.... just like I know Twisted will drop something or knock his camera out of focus (but then he'll fix it, so I don't mind waiting till he picks his top cap up off the floor again!)
Trust comes from two things... knowledge and consistency of format. You don't have to know everything, just be honest about what you don't know (e.g. "I don't know what threading this is" or "I'm not sure if this 510 is adjustable"). Set yourself up to look like you both know and care about what you're doing, and don't work against your natural personality.