Pretty good except the main riff and riff a are played with power chords. And there is a mistake in riff a...


E|------------------2----2-------3----3-------5----5---7|
B|------------------2----2-------3----3-------5----5---7|
G|------------------------------------------------------|
D|------------------------------------------------------|
A|------------------------------------------------------|
E|--0-2-3-5-3-0-2-----2------3-----3------5-----5------7|
^
This should be on the A string, so it is a B not a F#. And it is also played in power chords are I said above. But overall, good job man.

Um, ya the song is much longer than two riffs, and if you're going to write a tab, do the whole thing, not two riffs.