#1
Any good tips on how to do these? i know you have to hit the string with your thumb as you pick, but it just doesn't work too well for me, any help?
#4
turn up the gain.

make sure theres not too much pick showing (i.e only the tip)

it needs practice practice practice. i doesn't tend to come naturally for most players.

you gotta 'flick' sorta. thats how i do it. main thing is practice.