I've posted a few scans of paintings I did around 15 and 20 years ago as a photo album on Facebook. If you've seen the scans of drawings from around that time, you'll know these were all finished before I went back to school for art.
I used to use really tiny brushes at the time, and it took me forever to finish a painting. The first image in the album is 9"x12", and it took me around 58 hours to complete it.
I don't do that anymore.