[Matty22]

Palm muting you rest the side of your hand against the strings near the bridge, lightly, muffling the strings

Muting with your fretting hand you strum the chord, then lightly lift of the strings..

When playing a power chord, in that 355xxx shape mute the higher pitch strings, with your pinky, if you play the chord using 3 fingers, or with your ring finger, if you play it with 2 fingers..

Theres a lot of practise in how heavy to mute, which mainly just comes from listenning to the original song