The overall shape is pretty cool, though I would recommend increasing the canvas size so that the Eastern peninsula does not feel quite so crowded against the map border. Two other comments regarding mountains and forests. It looks like you might have somehow inverted the mountain height map; might be worth it to go back and try to reverse this. As for the forests, there is a hard edged bevel surrounding the border that results from the bump mapping. This was always an issue with the original tutorial which is why later on in the tutorial thread I added some techniques for remedying this. In particular, I added some patterns for scattering individual trees near the edges of the forest (you can find this on the first page of the thread; in fact, I've added several updates to the thread that might be worth checking out). Also, one one of the green color layers, try setting the layer mode to "Multiply" rather than Overlay or Soft Light. That should help the color bleed into the edges a bit more. If it ends up looking too dark you can just reduce the opacity of one of the other color layers.
Overall though, once these issues get resolved, I'd say you are off to a great start!