Dont combo into the command throw like Brown said.
Drive nails are fine for zoning, however i use them in pressure whenever i can.
You have to get better at doing your combos. You were using 5a as a poke like you're supposed to, but you weren't actually doing a combo when it hit, or actually doing blockstrings.
2d is a great move, but you can't spam it that much against better players, you'll get punished alot.
Be careful on the wakeup distortions, 98% of the time they wont hit because it's a 19 frame startup move.
6d on wakeup if you dont want to guess high/low, it has frame 1 guard points, so it acts as a reversal against mid/lows.