Make sure to be yourself in your videos! Don't try going off and being someone else. Like, you want your subscribers to love you for you, not for someone else. I've seen multiple channels try to be like bigger YouTubers, heck, even commentate JUST like them! So the only advice I can give is be you, if your subscribers love you, you want them to love you FOR YOU, no one else.
~God Bless,
ProjectIG