While no doubt there's a lot of potential and the game's shaping up very nicely, I find you tend to use a lot of stiff silhouettes, poses, mapping and stuff -- the rendering is quite nice, you do have a nice art style as well but you pose your things stiffly.
I'd recommend trying to do some more interesting and organic silhouettes, the sprite here looks neat but the silhouette looks like a Ditto!
I did a very quick 2 minute touchup to show how you could break shapes down, don't be afraid of using strong angles and stuff, it's gonna make your stuff look even better.
Other places I see the stiffness are in overly round and inorganic trees, the way characters are positioned in the battle scene, menus... Change that one little thing and I feel your art will have a noticeable and quick improvement! ~
