Newbie to the forums here. I haven't done a whole lot of spriting but I've recently started getting into indie dev stuff with some old co-workers and it rekindled my love for old 8-bit to 16bit graphics. This seems like a good project to practice and help on a project that this forum really needs.
Great work by everyone so far. I like the other tilesets too.
Soo I made a top of cave/ bottom of platform section. Hope you can find it useful! Feel free to edit as you like.
Update: Made a wooden door/post. again, feel free to edit.