Well shit... I finished it, but imgur is down so I can't upload it. I added some major rivers and lakes and remade some of the boarders to more accurately represent how they would actually mark their boarders, like along rivers.

Edit: It's back! [url=http://imgur.com/EA6zRka.png]Here[/url] is the mountainless map, and [url=http://i.imgur.com/TS1x6HT.png]here[/url] is the detailed map.