I got all fingers except my pinky going, getting your pinky going along is difficult as shit and I don't know why but when I try I just don't use it alot.. it's to weak or something

just practise a lot, don't mind mistakes to much, if you want to practise using 4 or 3 fingers taping your fingers in is also a solution to practise good.
just tape in your 2 fingers on the right side of your hand and the 2 fingers on the left side of you hand (the thumb is not counting in this matter...)

it sounds strange but this is also a way I practise sometimes, it's pretty darned difficult though.