Super Mario Bros custom tileset

[TheMario360]

The vertical pipes still need to be flipped horizontally to correct their lightsource. The light should come from the top-left as it does for all the other objects.

The ground dirt pattern needs some tweaking, too - right now, there are obvious vertical lines between the tiles, you should edit the dot pattern to make the tiles fit together better. Such random dithering patterns aren't very appealing visually either way. The grass looks really flat and the shading you applied to the edges is odd, especially since it breaks off from the top-left corner tile to the top tile. The purple blocks stick out a lot and don't fit their environment, plus they have a random pixel pattern, too.

I made the specified edits in this image.