Most Helpful Guy
Whatever makes your video look more appealing to click on.
Proper lighting, a good thumbnail, an interesting simple title.
You know what really helps get clicks? Hot woman.
Your video should be easy enough to watch and not go off track too much. Add music and humor to entertain the audience. Make sure picture quality is 720p minimum, but seriously shoot for 1080p. If it's too long, people won't want to watch it if it's about making smores.
Most Helpful Girl
Just keep an eccentric personality, keep talking and people will keep waking however don't stray too much from your original idea. If something takes awhile (say to bake/chill) have it prepared in advance that way you can keep your viewers engaged.