>>48593238I'm not sure where this is supposed to be in the game but firstly I'd suggest fixing up the Desert, for one it doesn't need to be this large, an open space for the sake of an open space just looks boring especially with all the weirdly place small ledges. I'd probably shrink the whole thing down to about 1/5th the size and add in a lot more deep sand.
I think it's also a bit weird that it just suddenly cuts from a Desert to a Pacifidlog-esque location, I'd recommend for this creating custom tiles using the Pacifidlog houses and re-conceptualize the area as a desert oasis, still being mostly sandy but with a few trees around a singular body of water that's much smaller than what's depicted. Also the fencing next to the Pokemon Center seems weird and unnatural, you could've probably just had the fence extend out and had the the path to the cave blocked by trees instead. Also I'd suggest reconsidering the layout of the south side of this area because the chaotic layout of the trees, grass and puddles looks like it'd be more annoying to navigate than anything.
The desert pass leading out to the coast is fine but should be smaller, and way smaller if you're not planning on putting any trainers or what not there, alternatively if you can't shrink it's length I'd break it up with a cave, Pokemon has never obeyed actual distance with caves so you can make a fairly short cave cross that large area instead.
For the coast itself I think it'd be best if you reduced the accessible coastal area, the whole point of this seems to be to lead to this forested island which doesn't need a big open space for, also you should extend the stairs to be two-tiles wide since one-tile wide stairs are kinda weird.