Welcome to the Guild! That's already looking pretty impressive...and you get bonus points for using hexes! Have some rep for posting a great map right away.
There are some great tutorials on regional/continental maps on this site and you might find some helpful tips there. My main critique of what you've got here, and this may not matter depending on the style you're going for, is that your mountains look a little "glued on" to otherwise flat terrain. Some foothills that blend in to them might soften that. Just a thought. There's nothing wrong with the bevel mountain creation trick but there are a lot of ways to make a mountain so, if you're not 100% happy with them, have a look around to see if there are other techniques you might prefer. I'm *very* partial to the very natural hills/mountains that come from Ascensions atlas style (in the tutorials section).