Looks good overall, I'm digging what you've made. The few downsides I caught from the video is that you have a fair amount of empty space across your flat surfaces, the biggest victim being the greenery. I'd recommend spending some time creating a nice blendmap with a dirt texture, and planting some trees around the map, grasses too. We have them, spruce the place up!
That aside, you may wanna consider some more torches/lamps around the place perhaps, not so for lack of light but rather as points of contrast. I am curious to see how the map would look in a night setting though, not gonna lie.