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Not that I've ever seen. It's just that sanding is super popular these days and we've all got amazing sanders and hoovers so filler on walls gets sanded when it's actually a lot easier with a bucket of clean water and a sponge to even out newly dried filler by wiping the sponge on the filler. It wouldn't be much of a video. :)
Just try it and you'll see.
On the corner trowel, there's also a float which is made of polystyrene, it has softer characteristics.
You could also nail a batten to the wall and get the ceiling edge level then fill the wall when the ceiling's dry.
YouTube video instructions?