Here is a pencil frame from Left Over Dog before it's cleaned up and scanned and painted in Animo. Yes that is a nipple on his cheek.
We used Animo which was a digital painting program which replaced acetate cells and painting onto them by hand. We rarely use these traditional techniques as now we draw directly into the computer. The main reasons for the shift in process is time and money. As in hardly any of either. Sniff.