For some reason the only thing I felt like doing was a tileset, so I made one. I think it looks pretty good, but I'd like to have an external point of view on it. I'm not sharing the tileset right now, but only a screenshot using it.
If I ever make a completely new level, it will have a lot more detail than what I've done before, so now I use the tileset in 3 different levels of depth, and I think it looks pretty good so far. I think that tree is the most detailed thing I've done in a tileset, in my other level I had to use a tree from one of the stock tilesets, but maybe I won't have to do that anymore.
Also, I'm still working on some stuff, like grass on the floor (layer 2).
I'd be grateful to hear some suggestions from people who are used to making this stuff