I'd just ask - what are the huge blue things? If they are lakes and rivers ... well, your rivers are much too wide and don't behave like rivers. Water is water, no matter how fantastic you get!
Before commenting further, I'd just suggest a legend of some kind to indicate what exactly different map elements are. As for the shape of the land - that's pretty arbitrary. If you have a fantasy setting where the Supreme Spaghetti Saucer shaped the world to his Whim, that's fine. But shaping the gravity field at whim ... that's a harder one and it's going to make your fantasy world very wonky and I'd recommend having a really good backstory for it!
