Talk:Maps by Nick HD/@comment-26092597-20150507213525/@comment-26380049-20150510094647

You mean the coordinates?

Shouldn't be that hard, you just need a photo program that supports layers, have 2 layers with your map and the texture of the coordinates, and change the transparency of the coordinate layer and it should look good enough. Although for these it also looks like he added in a map texture along with the coordinate texture.