My mother asked me what kind of sweater I would like her to knit for my son. After some thinking I decided I wanted him to have Tux on his sweater. I found a picture of tux, reduced the resolution to how many masks would fit on the sweater and did some manual correction of pixel colours. I also wanted the picture to have a grid and numbered ticks. This is not something the normal print dialog offers to do for you, but it can easily be done in Python using Matplotlib.