Hi @dafoota, super cool concept and perspective!
The tree branch leaves on the top left keep stealing my attention, so you might want to address that somehow.
I think it would be really cool to show some beams of light coming from the cave roof, just to show the tree getting some sun.
Also, the cave would likely be very dark, which would make the tree look almost black from the angle of the viewer, so you might want to add some torches around the tree to introduce light source?
Structurally, you may want to extend the right support branch because it feels like the house can easily fall over from the right. Just a thought. Finally, I would show the tree ladder dropped to guide the viewer up the tree.
I really dig the color palette and look forward to seeing your finished piece!
Cheers!