when defending against 4-3-3 your midfield must be compact and close to the defense
Why? Why is it any different than playing against another 4-4-2?
ask one of your attackers to join the midfield and stay close with their defensive midfielder(possibly the play maker)
Why? I already have 4 midfielders against their 3 so why do I need to pull an attacker back? I have 2 attackers, tyey have 4 defenders so I'm up 2 players, 1 in midfield and 1 in defence, why do I need another one to come back?
ask your two wide midfielder to mark the space either side lines so their wingers cant penetrate.
Their wingers will already be penetrating as they will be in a forward position, i.e. behind your midfield.
Also your two full backs should mark their two wide attackers then you will have two CM against one and two CB against one attacker.
Aren't we making assumptions that the opposition forwards are playing 2 wide and one central, maybe they are playing 3 central?
Sorry to rip your post apart however I fail to see how anyone can provide any constructive advice based on the information given.
There are several ways to play the different formations, my 4-4-2 could be different from your 4-4-2. We could both play the same 4-4-2 however my style of play could be different from your style of play so the way my 4-4-2 works could be different from yours.
Other factors coming into it could be skill levels of the individual players and teams, if my ability level is way above yours then will it really matter what formation you play?
So Mico, give us some more information.