quoting Nessari, Illúbequía, Seattle, Cascadia:

Speaking of maps, any suggestions on how to figure out vector drawing? Aside from the obvious (googling it and/or potentially youtube tutorials), of course. I've only really done from-scratch bitmap work and you can only adjust so many pixels by hand before admitting you're wasting huge amounts of time.

You'd... need to say where you're stuck, I think? 'cause that's super open-ended. Step 1: run Inkscape. Step 2: draw squiggles with mouse using pen tool. Done!