Hello i am newbie in this game and i need your advice about my formation.

I already have this one:

----ST---ST----
------AMC------
ML----MC----MR
----------------
DL-DC----DC-DR

Can you tell me if i use good formation or not? I have 11 wins in row during this season (season2).
And i dont know how to use red and blue narrows. I know that one of them are for wide line or something like that but i have no idea how to use it and how it influences matches.

Thank you.