
Started this edit some time ago and it doesn't really fit with the flat grass and such but i think maybe theres something you can learn from it still, mostly that having
some kind of light source is always good. even if you totally break it like i did it still looks better than when its just flat and pillow shaded. I think you need to watch more refferences, I'm not telling you to go rip everything you see, but you have to decide for a style you want to use. When you just copied the earthbound grass-to-earth transition every other grass tile looked out of place. Also, I love Earthbound but using it as an example to copy isn't really that great since it's one of the ugliest rpgs there is.
regarding your intro scene you need to use some references, google image "sea sky" or "sea sky dramatic".