Fantasy Continent: Amanium

[TombRaiderJake]

Well, I was highly unsatisfied with my first attempt at a continent called Amanium, so I decided to start anew but keeping the same name. I really like this map so far and would like to see it completed.
Here's what I have so far:
World v0_5.png

Useful information:
--I am using GIMP
--I imagine this being fairly large with the land mass either about the size of the US or between Canada and Antarctica (either 6,309,690 sq km or 10,716,438 sq km)
--I used this tutorial: Random Fantasy Map Tutorial, GIMP 2.8
--Planet is a sphere
--Planet is likely going to be larger than Earth

Things I would like to know:
--How to add in borders for provinces
--How to add in symbols and names for major locations
--How to add in important land features like:
----Rivers, lakes, etc
----Mountains
----Forests, Jungles
----Swamps, deserts, plains, etc*
*These are not necessary, as i think the map may look crowded with too much info on it.

Thank you for your help!