Hey! =)
I like your overall mood and colors, especially for a first digitally drawn mapping attempt! For that alone, I will rep you! Great!
Some pointers if you are interested: Texture density and contrast. With texture density I mean the stark difference between land and sea. This is not always an issue, but I think here you can slightly improve it by adding a tiny bit of it to the overall land. Contrast just what it is: By going a little bit deeper, you can also tone down the hard-white glow on the typo. I re-uploaded what I mean below regarding contrast / light, not including the texture bit. I'm sure you'll see the difference.
Thank you for sharing!
Best wishes from Southern Germany to Southern Germany,
--Steffen
Stepkliff-min.jpg