My very first map, a dnd homebrew continent for my dm

[weatherhills]

Alright, consider me extremely intimidated to post on here!
Please bear in mind: I have absolutely no idea what I'm doing. Prior to starting this map, I hadn't drawn anything seriously in over a decade
and this is basically the first time I use my drawing tablet to actually draw and paint digitally. So Photoshop is still a terrifying wild beast I'm trying to tame.
That being said... I'm having a ton of fun. This is what it looks like for now:



Little bit of backstory for the map: one of my dungeons & dragons' DM said he didn't have a map for his homebrew world and I heard myself say "I'll draw one!" before I could stop myself.
A lot of places are still unnamed and a lot of points of interest and features are subject to change because I pretty much just threw whatever I wanted wherever I wanted, just to practice drawing different things
and giving him an idea of how things would look in my still developing style.
He also really loves how this guild's very own MistyBeee does illustrated city medallions and asked me to do those for the 6 main settlements.

Anyway, here are some little snippets I like.



Things I'm undecided on/have no idea how to do:
What to fill the sea with. Some little waves? Some noise texture? Different colour to show depth? Those navigation lines you see on nautical maps? All of the above???
The frame around the map.
How to paint beaches/sand
The rivers placement. This seems to be a hot topic around here ^^
The legend and the frame around it...
How does one go about painting snow covered ground? I don't know but I'll need to find out.


Happy to hear comments and critiques from the community