Terraria Community Forums

Be an enjoyable person to listen to and most of the more popular you tubers like vanoss and the yogscast play games with friends which makes the videos all the funnier

Don't scream a lot.

Don't do minecraft its over used do some destiny or borderlands people generally flock to that stuff
Some people to look for with this stuff
Admiral bahroo
Dpj
Easynow1337
And more console

I agree some people are good at minecraft cause they have good friends to help them build incredible things and set up story lines that are hilarious. Do some shooter and action games or if you enjoy roleplay then do dragon age, beware your choices if you do however

You don't need voice, non-intrusive voice ala Yrimir works wonders. Play what you enjoy (or what is so bad it's extremely funny), listen to criticism, and don't try to be funny, it'll come naturally.

Also tdkpyrostasis has tips on how to set up a YouTube channel and the ethics of it and what people are looking for