First I filled a square in the canvas sampler:
It was a challenge to find the right holes. Canvas is far stiffer than this slightly floppy even weave and would have made stitching much easier. Here the pink thread sinks into and lurkes behind the weave, sometimes making it look as if I have missed a hole.... I have learned the hard way that Canvas stitches should be stitched on CANVAS!
For the next part of the homework I selected a blue plain weave and this rainbow Pearl #8.
Next I marked a graph paper,
pinned it to blue fabric,
pierced holes in the border of each square with a thick needle,
and here is the result.