Not really sure what I should start working on next tbh. As far as my current game goes, right now the only thing I can do is rework the trailer to make it shorter and more interesting. There are some other things I need to add for the paid version, like ng+ and the retro soundtrack, but I want to make damn sure the base game is as close to perfect as I can get it first. Those things are extremely simple to get working too, so I'm not too worried about it.
For my next game, there's a lot of stuff I could start working on. I have a pretty good idea of what I want the music to sound like so I could start on that. I'm still really not sure what kind of look I want to go for. Ideally, I'd make it a 3D game in Godot, but I have no 3D modeling skills and I don't know anyone that would be willing to just help a first timer by making all of the assets. I could use stand-ins in the meantime I guess. I could also start learning 3D modeling or learning 2D art, which could benefit the game even if I decided to stick with something like RPG Maker.
As far as the next game goes, I actually already have the entire story, all the concepts for the levels/areas, concepts for puzzles, etc. It's pretty much all on paper atm. So there isn't much I could do there.
I could technically start writing the story for my NEXT next project, the God's Disdain sequel. Not sure that would be a good use of time atm though.