Hello everyone, new here. Signed up because on various searches for inspiration I found out people post stuff here for tips/help/criticism, and I could really use some!

Working on a game, premise is about an abandoned city in the sky, and you explore the islands, in your hot air balloon, to find out what has happened through various media, and get the backstory of various people who lived there. So my major focus for the art is for it to be easily able to be made as tilesets, as I used Tiled to make my scenes to be put into GMS, and for there to be lots of interesting details without it being too busy visually.

House-wise, I want them to feel like they were built into the islands, (you will be able to enter houses by the doors on the side). I'm reasonably happy with the island terrain, but not completely with colour/maybe texturing, and I'm not happy with the house, especially windows, bleh.

Pictures & Progress [The scale in-game is shown at 200%]
Spoiler

I'm open to any suggestions/ideas of ways to improve it, I'll be happy to here them and implement them,
Thanks in advance!