Stephen McFeely was 43 in Marvel Studios: Assembling a Universe when he played the character 'Self'.
That was over 10 years ago in 2014.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 54, and has starred in 4 movies in total, 3 of those since Marvel Studios: Assembling a Universe was released.
In Marvel Studios: Assembling a Universe, I think Stephen McFeely looks: