Your mountain ranges are odd. Most real mountain ranges either run along a coast (well, actually the coast runs along the mountain range) (the Andes for example) or steer away from the coasts altogether (the Alps are a good example of that). Mountain ranges perpendicular to the coast are a very rare thing to happen in the real world. Take the Pyrenees for example: on first sight they seem to connect two coasts, but in reality they run along the northern edge of the Iberian peninsula. I can't think of any other mountain range in our world that starts perpendicular to one coastline, crosses the continent, and then ends perpendicular to another coastline.
I do like your continent shapes, however, and I'm also a big fan of you colour scheme. My compliments!