Thanks for the feed back everyone! Thank you for the words as to the color scheme and detailing, I work very hard to get the land masses right and it's actually a bit of a piece of pride for me.

As for the rivers, some have a specific purpose to do what they do within the world, but I get what you're saying so I will take a look at that tutorial and make some adjustments.

As for the mountains, I think it may be because of the sketchy nature of them mixed in with the less sketchy details. I saw some tutorials on the forum last night about more realistic mountains, so I'm going to give that a shot.