I have been making them since May 2011, i make around 1 intro a day for a new person sometimes more. i have made intro's for around 4 partners,2 companies and around 90 intro's for random people that have asked. Any questions please refer to my channel.
https://www.youtube.com/user/Createmyintro
But just remmber, i make these free on my own time
Examples of my work: