4x4 advanced centers?

[iTz Dr Pepper]

I average about 35 seconds on centers and I don't know if I should learn an advanced centers method(if there is one) or if I should
on just keep practicing my current method(i learned from MeMyselfAndPi)

 

[Mal]

Fazrulz1 on youtube has 4x4 example solves on centers and edges.

 

[tx789]

Practise get a better cube