Honestly, this map doesn't look too good, there is a nice castle design, but the mountain and river look a bit too "square" you should spend more time on those things, smoothing them out and making them look realistic. My old maps do not really have that feature in them, but my newer ones I am working on will be like that, it isn't too hard to do.
Overall, I think this map has potential, maybe a few edits and if you spent a few hours longer on this it could look very nice.