Thanks to Kate for the brilliant and colourized revisions.
PDF available here
for the full sized graph. Don't forget to read the graph from the top for socks so that the skulls land right-side-up.
Added later: Take note that the chart is for a 70 stitch sock. If you want a sock with fewer stitches, manipulate the diamonds according to the argyle charts in the previous post, and center the Jolly Roger accordingly.