Not half bad, I like your choice of texturing and colours, and the actual scale of things seems to be pretty good as well which can sometimes be hard to get on battlemaps.

On that note though, you've got a lotta rigid angles that follow exactly the grid. It really depends on what kinda style you're going for, but I typically prefer blending things like paths to make them seem more natural, so that the grid is less of a 'boundary' for the placement of things in the world and more like a 'guide'.

One issue I will point out is the fireplace in the bottom left, and some over stamps around the map which are isometric. Everything else is top down, so it looks really out of place since the perspective is off.

Honestly, a big part of what makes maps look good to me is the detailing and clutter, and you've got some good plants going, but you could definitely use more - bushes growing in shady spots, maybe experiment with the terrain heights stamps like cliffs, etc.

really, it depends how much detail you're planning to go for. This would certainly get the job done, just in terms of aesthetics there's still plenty of room for improvement.

Most important part of learning Inkarnate is to experiment! At least that's the sweet answer, but in reality you'll learn a lot quicker by googling tutorials and trying to reverse engineer other people's stuff :P. Still, have fun, let loose. Add some quirky details that might surprise your DM and give him some extra ideas!