This is a tileset I worked really hard on. With this tileset, you can create "3D" looking blocks. Please give credit if you use this.
This tileset works best in a Layer 2 level with the interactive parts on layer 2 with priority off and the foreground on layer 1 with priority on. In the first screenshot and the sample level, the green parts are on Layer 1 and the yellow parts are on layer 2.
If I am missing something or have any more questions/doubts, please leave them in the comment section.
Doesn't use custom palettes; works with vanilla palettes 3, 5, 6 and 7.