As someone not very familiar with CC3 I have to say that I can't distinguish a lot of the stuff going on (I'm guessing the settlements are the small gray blips?). But I think most of those'll be resolved once you label all the details. The geography doesn't seem too natural; the random clumps of mountains are a tad distracting, and ridges that follow the contours of the land would look a bit more smooth. Like ranges that go east-west might make more sense given the horizontal-ness of the landmasses (granted I'm no expert on geomorphology so I can't give too much scientifically sound advice). The different features don't fully flow together just yet, though I really like the diversity of environments, and there's a lot of creative potential here. Good job for a first map.