I use paint.net for my graphics program.
I go about this differently.
Original, remove excess background. I do this by drawing a circle mask and Ctrl-X to cut the image I want from the original. Then I paste as new image. (edit-paste as new image) Then save.
Then... I go to Effects-Stylize-Outline... I get this.
Then I change it to black and white. Adjustments - Black and White.
It needs a little more help so I click Effects, Artistic, Ink Drawing.
And I get this.
Done.
Keep in mind this works best with a photo or picture that has good contrast initially.