After learning a bit more about stage making, I'm back to revive my thread!
For starters, I stopped working on the stages I was working on previously, but I may take them on later (If I find them interesting again).
I'll update the OP with a set of stages I'm planning to make/that I've already started making. They will be ranked on priority, meaning that the first stage will usually be updated first. There may be some exceptions though.
For now, I'm working on the earth temple from Skyward Sword (posting an old pic):
I'm working on adding another lava hazard, like the real game: