Map of Valentine Navalia (WIP) – January 23, 2020 at 02:10PM

I am currently coloring a map that I finished in 2018. I am very new to the whole photoshopping process, and I was wondering if you had any helpful tips or tutorials? Many tutorials I see on Youtube are very generic and only show how to make pirate maps or large regions.

Here is my original map:

And this is my current work in progress:

Attached Thumbnails