I am not quite satisfied with the current visuals of my dungeon so I started the process of overhauling the tiles. I want them to be more interesting and impressive to look at. Since the player will spend a not insignificant portion of the game looking at those tiles.
So I started a different approach. Before I used a character editor to create my tilesets which limits the number of colors a lot. Now I basically drew a picture in multipaint and created a nine by four tile grid where each tile consists of four by four eight pixel squares.
I started with a simple perspective view of the walls into infinity. I added a very simple brickwork and mirrored it to the other side.
Then I added more details to the left side like cracks and moss and made a sort of gradient to simulate the falloff of light.
The next step was to add a floor and a ceiling to the dungeon with the same lighting falloff.
When I was satisfied with the result I simply mirrored it again and added a little helping guide for where to cut the tiles later.
I didn’t like how the floor and ceiling looked too similar to the walls and didn’t separate themselves enough. So I reworked that to make it more distinct. I ended up with a brown floor and a purple ceiling.