Nice work. Those old fashioned clippers sound like a buzz saw. OSHA may require everyone in the room to have hearing protection. They probably zip right through the heavy layers though.
I got tired of going to the barber for just a trim around the ears and cleaning up the back of the neck; so, I bought some full size clippers (not trimmers). I've been doing that myself using the medicine cabinet mirror in conjunction with a large rectangular handheld mirror to see what I'm doing. Works great! I don't have to make a trip to the barber's so often. I still have a head full of thick hair and it keeps it from looking ragged.
FWIW, I did my homework and researched the various models of clippers offered by the major brands. I settled on one and after 4 years of use I can highly recommend it:
https://www.amazon.com/Oster-Speed-P...687333&sr=8-1& (industrial strength, made in USA).