Execution on Stick (Sophitia, mostly)

SoNG-Of-SiLeNCe

Red Lotus
I'm trying the game on a stick and everything feels so much more fluid.
Still getting used to it so any tips on ways to execute things correctly, even as mundane as how to hold the stick correctly, would be very much welcome.

Also, the biggest problem I'm having: I play Sophitia and I notice that if I don't rush my 236 input, she steps slightly during her AS*TAS
Is this a bad thing? Should I concentrate on trying to get the 236 as fast as I can or is the step okay?

Finally: Double inputs like 66 on a stick: is there a difference between 66 and [6] with a stick?