Hey FF ! I know how to "shred" but only on songs i've learned, for ex, on the Boo 'Machine' solo, after the sweep, there a little shred. I master it. Now when I want to noodle around, I don't really know which notes to hit when I shred. I've never learned theory so, do you know how i could improve ?
Use your ears: if a note sounds good in context, it's good :) if it doesn't, it's not! Ear training and theory knowledge help but in the end it's just that.
If the question is more related on what to play and you feel out of ideas, learn some licks and re-work them, experiment with all the techniques and blend them.
If the question is more related on what to play and you feel out of ideas, learn some licks and re-work them, experiment with all the techniques and blend them.