28 Jun 2017, 19:11

@VonnVary I use GIMP.
https://www.gimp.org/

Traditionally, it is suggested the lines to be 1 pixel tick only, for what you will use to get the polygons, tho I personally like them being thicker, WAW style, but this is mostly related to personal preferences without relief and if you want the map looking fairly nice also when switching off map details (with relief on, it doesn't matter the thickness, as you can cover anything, aside from some zoom related behaviours).