A very nice job for a first map.

Right now I only have a few constructive comments. The size of the continent seems a little small for the overall size of the map, maybe you should try filling in the large empty areas of the ocean with small archipelagos or large islands, or shrink the size of the map itself to have less empty space. As far as the terrain goes I think you should make the mountain snow blend a little better so it looks more like it follows the contours of the peaks below instead of just sitting on top of them. I think you might want to toy with the colors of the overall terrain as well to get something that looks a little more earthy (darker greens for example).

I hope that helps you as you continue to work, looking forward to the next WIP.