try 1

[newsclippings]

EDIT 1
stepping swiftly
atop a sad waterfall
i sit on the rock

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read a little bit of the guidelines billy posted in PDF. does 5-7-5 relate to syllables, if so i may have made an oppsy.

I like the image you captured here. Many modern haiku eschew the so-called 5-7-5 rule in favor of focus and economy.

A few concerns..first, "stepping" in the first lines contradicts "sit" in the last line. Since a haiku should be a snapshot, I think the progression of action is too long. Second, it is usually best to avoid modifiers in haiku.

Suggested edit:

waterfall-
I sit
on a rock

I think your edit may not be a haiku; but rather the latter two lines are just one sentence. "I sit on a rock."
There should be an original, but not so obvious connection between the first and the third line, and the middle line is what I like to think of as a conjunction for the two.