Whether you’ve been laid off after twenty years in advertising sales or finally want to be the “cool dad” just once, a mid-career transition to YouTube vlogging can help vault you to mega-fame among the coveted 9 -15 demographic. At your advancing age, though, it’ll be an uphill battle. Here are some tips to get you started: Create a pseudonym using two first names – i.e., Zach Bryce, Colt Griffin, Griff Colton or Brogan Pec. Style your hair in a surf-swept crescendo of blond tips. If you no longer have hair simply cut the face out of a Guy Fieri…