I was able to play this for about 30 minutes today, here are some things I noticed:
The Good:
-I liked the music in the game (mostly).
-Nice use of tints/fogs. Seems you got good mileage out of Busted Ed's Tips and Tricks.
-Story seems interesting so far.
Needs Improvement:
-I'd look at your map transfers again. Some of them only trigger from one direction, which with the way your maps are set up, could lead a player to thinking you can't leave the map.
-Encounter rate seemed really high.
-I wondered a few times about your scale in your game world. How big are your houses compared to the inside? The starting house felt HUGE outside compared to what I saw inside.
-You need to explain to the player how to trigger the skit system. I had to smash keys until I figured it out when the first one showed up.
Suggestions (some my personal ones, so take them how you shall)
-I'd look and see if there is something that can be done about the encounter rate. I got a fight 1 step right after another once. Another time it was a whole 3 steps. Though, the only way to fix it is with scripting, due to how RPGMaker handles encounters (I think Yanfly has a script to fix this, I wrote one that does, and ksjp17 has a workaround with light scripting and variables, just to name three approaches).
-I don't like open edges on my maps, as it feels like I should be able to leave from any square on the edge of the map. If you do wish to keep the current set up (as I know this is personal preference), make sure it is clear where a transfer point is. Two places I felt where it was not clear was the 2nd forest where you go to get the herb (the exit point from the forest is not well marked), and the forest you go to when you leave the 2nd town. Maybe put a road there or something so the player knows it is there?
-I would think about maybe tweaking your EVA rate. I felt like I missed a lot in what I played, and misses can be deadly when you only have one party member. Maybe make the first monsters have 0% EVA?
-Maybe change the color of the text in the intro. I felt like white text was hard to read on those pictures.
-Why is the text centered like it is in the intro? It looked odd to me. Any reason for it?
-Maybe consider a battle theme besides the one you used? I think about every free RPGMaker game uses that theme. I know you said this is a test project to see how far you can go solo, so understand if you don't want to, so treat this suggestion how you shall.
And some quirks that I wondered about. Maybe just something to think about:
-Why does it tell me to go back and rest when I try to go south after visiting the 2nd town but before picking up Leah. I rested in the inn. Why was that not sufficient? (And yes, I know you want me to rest somewhere else for plot reasons, but you need to explain to the player why this was not enough).
-How did Leah know about paradise, if the legend is no longer passed on in most families? I felt that was never explained in the story.
That's what I got so far. Hope this helps you to fix things up!