I absolutely love that this started out as a sim city 4 map! Your rivers don't seem too bad although the swamp area is a little iffy. Usually a swamp would be contained in a single drainage basin and not divided over two. Everything looks very passable though despite you being new to this stuff Were I you, I'd draw that mountain range a little further south east and join it up to those steep cliffs you are going for but that is a matter of taste only lol