"Micro Managing" While Writing is Like Sculpting

    You know how when a person is writing (usually a first draft or a rewrite) they can stop, go back a couple sentences, edit a paragraph slightly, and then go back to where they paused and start writing again? It's like having little bouts of micro management, making small revisions to the manuscript before it's even completed.
    That kind of resembles the process of sculpting with modeling clay, doesn't it? It could also be likened to sculpting with rock, of course, but personally I think the modeling clay kind of sculpting is more accurate. Because with  something hard like rock, the sculpting involves chipping things away with great care to form an image, and you can't add more rock onto it without some inconvenience, so major changes can't really be done over and over again. However, with something soft like modeling clay, you're using your hands to mold, remold, and sometimes carve in order to create something, and you can make additions and big adjustments without needing a new block.
    Which is more like what micro managing while writing a piece is usually like. Adding more sentences to make the scene more thorough, removing fluff that just clutters up space, replacing words with better-sounding ones, making little improvements. The gradual revisions that happen before the piece is actually done might not be as in-depth and complete as the actual revision stage, but they definitely improve the writing piece, especially over time.
    For one, it makes the manuscript look a little nicer; which is awesome not only because that makes it more fun to reread, but it can also make it less frustrating to edit later. Also, going back to rewrite portions of text also makes things a little more balanced; it keeps the manuscript from being full of paragraphs with identical lengths, and it ensures that an action which should take five sentences isn't condensed into one, or vice versa. The details get smoothed over a bit with this kind of writing, and consistency is kept up. Plus, writing like this is also something of a breather; it gives a short break from planning and jotting down new paragraphs one after another, without stopping up the creative juices.
    So overall, like sculpting, micro managing during the writing process brings small improvements that can do a lot of good in a manuscript.
    Do you agree? Do you micro manage while you write? Or do you wait until a set time to get to adjusting and reshaping the writing?