Four Seasons tiles and sprites

Four Seasons - Bring on the Summer

From this ..

.. with use of these tiles/sprites ..

 .. to me making these additional 16x16 tiles/sprites below ...

 .. to then be able to make some underground sections like shown below :)

Click on the image to see a larger image. For those tiles and sprites in pink, which are CC0 (Commercial use allowed) licensed tiles/sprites, pop over to get more tiles/sprites here :)