Redrummd,
When I first started drafting, ink on mylar, I thought my work looked like garbage when I placed it next to other people's work. Everyone else loved the precision that I applied to my efforts. I finally got to the point that I started accepting that it was good. After I started teaching drafting I showed my students some of my old manual work and they were stunned that it was done by hand. They really thought it was CAD. It took me years before I was proud to show my work old hand drawings and not be embarrassed. So, you're correct, I tend to be extremely critical of my work.