Help with my first map

[LucasG]

Hello Guys this is my first post here, when I was younger I used to play tabletop Gaming, recently I decided to give it another shot and with that the desire to make maps came along, i started to create a map of a yet unnamed world, but currently I'm heaving some trouble to color it, I kinda wanted to do a style that make my map look like is was hand drawn, something more cartoonish, I use photoshop and here is my map:



Any tips, guides, links or tutorials you can give me will be usefull, thank you