Welcome to the Guild, Projectcannon.
So the map is as a whole an experiment?
I like the coloring, the lines and the mountains. Though simple in matters of style, they look good. Maybe you could even improve them with shading one side of them.
Your rivers split up very much, flowing into several directions before reaching the sea. Depending on the scale of the map that's ok or unnatural. River deltas could get rather big, but if the left landmass would represent a continent, its way too big. If you remember that rivers are just lines from a high to a low point and by that the ones with the highest ascent, so that water flows down the fastest when following this line, it's rather obvious a river could not just simply split up into several rivers.
Maybe you could test different fonts for naming different things.