How can I turn crisp/clean diagrams I create on my computer, into diagrams that look like these:
Notice how the lines are "coarse", they look like ink which has been soaked into grainy paper, they are quite imperfect lots of variability.
How do I apply such an effect to the lines over an entire diagram I may have created using straight-line, "perfect" rectangles, arrows etc.?
I don't know what the vocabulary for this is so it's been hard for me to research (and I am also lost now as to what tags to add to this question haha).
The only image processing program I have installed right now is ImageMagick, and I should have access to Affinity Photo. A solution using these would be the best for me.