Offside traps works best with zonal marking and if opponent have more than 5 players in your pitch.
High press is not related with offside traps.
For pressing style guide click here>>
http://forum.topeleven.com/formation...le-theory.html
Awe peter blue arrow on striker does not work as striker is made for scoring not for coming back.If your striker come back at defense he will be under pressure and his rating may fall down.It is like jackpot (work sometime or fail sometime).Your striker will be likely more to assist if you put blue arrow.
4-4-2 Has may types of formations;
4-4-2 classic is best for attacking counter attacks+short passes and high press with blue arrows on 2 MC.
But still this formation is unpredictable.