Here you can see some before/after comparisons. You can see here just how much extra “sky” I needed to fill in for City of Tears:


And here, you can see a demonstration of the parallax scrolling, and how troublesome it is to “fix” it:


Example of Fungal Wastes room transition:


In some rare cases I even had to reconstruct parts of a room from textures because painting around those elements (platforms in this example) would have been so much harder:
