id suggest, althought this is already pretty sick, move the camera slowly throughout the timelapse so when sped up it moved across an area<br />
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this is usually best done on a really windy day where everything is moving alot faster. alot of practice is needed too.<br />
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not saying yours is bad, its sick. just prettyy basic
an easier and more effient was of doing what FigmentFilmski* said would be to take the one you already have and put it on an editting program, zoom it in, and then put it on a slow motion path