What children's show was this?

Okay, I’m not sure if it was on the PBS station or not.. but I remember when I was very young I would watch this show every morning. Somewhere around middle to late 80’s, early 90’s.

It wasn’t a cartoon, and it had a guy in this grey, air force-looking jump suit and he would teach you how to draw different things, and he would have different guests come in and ‘visit’ him. He would draw on this very large top-flip pad of paper on an easel. At the very end of every show he would say some small speech and it was always the same.. I don’t remember most of it, but one part of it was ”...by just being the way you are.” I also remember him having a moustache.

I absolutely loved this show as a kid and learned to draw several different things from this guy. Does anyone know what this show was called?