im gonna be completely honest, your are pretty terrible.
but im gonna give you some props for making a video of yourself when you know your this bad.
im not ranting on you i just think you need some advice.
most of the songs you're attempting to play you should wait in all honesty.
you need to learn to relax both of your hands you are way to tense.
work on your timing thats more important then anything.
secondly your picking technique is very important, dont worry about your finger placement.
that will come after you can pick in time and efficiently.
i see your attempting so many songs and just playing riffs, work on 1 song and learn in completely.
i also suggest you learn some scales they will help you a lot.
as goes for the anchoring your pinky.. does what makes you feel comfortable and relaxed.
if i were you i wouldnt listen to a damn thing most of these people tell you.
im a guitar teacher i should know. keep practicing you'll catch on