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Don't no wat too do
What do you need help with? You're doing them. Just keep practicing and they'll begin to look better. You're throwing the wrong way but it's not a big deal. I ride left foot forward and throw to right. My homie does too and he does 360 bars and shit. It's sketchy at first to throw the wrong way because your bike wants to fall to right but eventually you'll just get used to it.
Tons of people don't pinch, a bar spin is just spinning the bars... Who says you have to pinch?
bmx companies invented "pinching" so they could have all those dumb kids throw away their slim seats and buy new twice as expensive "fat" seats ha ha ha ha