Hello Joshington! This was a tileset when I was starting to learn pixel art and made some mistakes on the export. Should be correct now.
Sorry for the late response. Good luck with your game!!!
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Thanks! Oh, and by the way, I'm all finished with the Demo version of Platform Kid, which only contains the first world, Grassy Valley. Here's the link: Platform Kid by Joshington. Go check it out if you have the time! Also, I already used a pixel art cave background made by lilCthulhu. Sorry about that. Hope you can improve on pixel art as a whole on the way!