like other people I will tell you to practice a lot with your stick.why?
bc PRACTICE MAKES YOU BETTER!!
now you have to focus on how to practice:
my advice is take your time, if a move is difficult to do , do is slower and make sure that you dont had extra direction , for example: 236+P is not 1236+P nor 41236+P
the advantage of the stick is the precision it gives you. the more precise you become = faster execution.
and if you got problems with long combos, break them in parts and work on each part separately until you master them , then practice the full combo.
ps: sorry for the crappy english but my 1st language is french and it is 3:30 am
"There's an EDIT button for a reason. Put all of your stuff in 1 post." sorry about that i am kind of tired but i will try to avoid it in the future.