I know its pretty bad that Ive been playing for half a year and still can quite get the up and down strokes down. I usually just pick down faster for 8th and 16th notes and I really need to quit before I get to used to it that it hurts my technique. Plz help!
So.... what do you actually need help for. You know what you aren't doing well, so practice more.
just practice picking up and down, its not that hard
just take scales and some simple songs and work on it. just sub-divide.
^That, play your favorite scales slow then get progressively faster, it'll eventually become second nature.