How do you write heavy metal riffs

In vocal and classical harmonies it can be sort of cool to have the harmony part hang out at a note while the melody changes, so that the interval changes.In this way, how can i improve my guitar riffs?Work with notes, power chords, etc.Pick a harmony and stick to it.As a learning writer i'm trying to write thrash metal influenced riffs and some blues stuff as well, so i listen to some of my favorite bands and try to come up with the feel i'm aiming for.

My biggest pet peeve is when guitarists write riffs using solely power chords. i've seen countless guitarists lock their first and third fingers into the power.I just want to know how each of you write your riffs and arrange them.Play around with the basic melody you've thought up to lay the foundation for the notes of the riff.Here's a guitar tutorial on how to play heavy metal riffs.Play around with the riff.

The bridge on raining blood by slayer.You usually aren't going to write the best thrash metal song in one night so work at it.Here are a few tips that might help you write better riffs.