A black and white template was provided, with the sole colour stipulation being that the lines in the 2nd panel down be black. This assignment is to emphasise some problem areas:

I think these include  – getting slanting edges smooth  and straight (means having to vary the stepping), keeping curves curving, making sure that crossovers meet on the other side, keeping points pointy – while at the same time creating a harmonious colour composition. The end result is quite pleasing. Got some interesting calligraphic effects in that second panel down!