Firstly, well done on your first digital map!
I like the colour palettte you've got here and your mountain style has a nice look to it. The whole map is has a nice vibe about it, vaguely Tolkien-esque too.
A couple of quick pointers. Not sure why "Arrin Desert" is blurry? Also, your border has some white edging around it on a couple of the side, which makes it look a bit off, so if you can fix those, it would help a bit. The image is also quite small.
Nonetheless, it's a great first effort at a digital piece. Keep it up and with the skills you've demonstrated here, along with that potential new tablet, you'll be amazed at how quickly your work develops!