This is rather charming little tileset Chris, but there are quite a few things which you might improve upon.
First, I really like your palette although you're not really using it to it's potential here; almost all your tiles are 2-3 colours and straight ramps. Mix it up a bit

Lighting - Everything here is pretty flat, there's barely any shadow and those there are aren't bold enough to really sell the effect properly.
Texture - Quite a few busy & distracting repeating patterns to be used (presumably) over large areas.
A couple of specifics; I find the cliffs hard to parse, no sense of height and the sides don't read as shaded. Secondly those trees... I know there's a long, illustrious tradition of awful flat midget trees in RPG's but they're super super lazy. Those trees actually inspired an edit, mainly in order to banish them.

I've roughed out a few ideas for how you could better render/utilise colours, avoid repetitive patterns and also some stylistic stuff. The houses suggested pine woods to me so I indulged myself. I recall from a previous thread that you're working with limited tiles so not all of this might be feasible and I guess you were aiming for a less representational look overall but there's a few ideas you could take away from it.