Hi Max, this is looking pretty good. I really like the mountains, and the door in the big mountain nicely fits the style.
I hope I'm right in assuming that you are inviting comments by posting here. If you don't mind me saying, I think the forests look a bit strange. Perhaps if the density of trees changed, so some areas look thicker and others more sparse, and/or if the trees overlapped one another more often. The other comment I have - and you may already be planning to do this yourself - perhaps hide an area of the border where it overlaps the mountains, so it looks like the map is spilling out of the frame.
Otherwise, looking really good - I particularly like the woodcut effect on your coastal waves and the crosshatch near the coasts. Are they done in PS?
What I had in mind for the forests was to choose a non overlapped style that would fit better with Blaeu's mountain's style (like I did on Provinces of Selen map) but maybe it doesn't work that good due to big areas, I don't know. I'm gonna try to increase opacity and/or add engraving lines style on a bottom layer to see if it's better. I'm not really sure to know how overlap good with this style of forests...
At the start I was planning to erase mountains off the border. And yes waves and crosshatch are made with PS ( first is engraving like pattern, second hand-made brush used with dynamic parameters)
Anyway thanks for the comment.
Those mountains are awesome. Just beautiful.