The method I like to use is variation. Just take away some of those power chords and sunstitute some new ones or change around the order you play them. This is more of a classic style. You could change the riff around.

Play the D5 power chord and then use the 0-3 hammerons as a little fill or something like that. Then go to the C5 power chord and use the 2-3-5-7 runs as a fill. That could be ok I guess if it works for what you are trying to do. Here's a tabbed version of what I'm saying.


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--7-7-7-7-----3p0--5-5-5-5-5/7--3p2p0---------
--5-5-5-5-0h3------3-3-3-3-------------0h3p0--
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