Hello guys, my name is David, 21 years old and i'm from Porto Alegre, Brazil

I love RPG (PnP and digital) and war/strategy games, one of the things that most fascinate me is maps of all kinds from small towns to kingdoms and even hole continents,
i'm an avid PnP RPG player so i'm used to draw lots of maps but never got any input on their realism/quality beyond some friends, i also like to draw characters
and write stories about them.

A few days ago i made a sketch on photoshop of a map i'm using for my latest stories (i'm trying to do a short novel on the style of game of thrones), i would love some input on where i can improve it, things that are out of place
and don't make sense and etc, it's a very early sketch just to have some general ideas before i put real work in it, here is the link: http://i.imgur.com/E2vN0nM.jpg

Many thanks!