With this tactic you will see, when you attack, many players are close to opponent's goal, players keep pushing ball in final third of field which gives you high percentage of possession and many shots on goal for you, and in nearly every match less shots for opponents.
Main thing for this tactic is that you MUST have two good defenders, when I say good I mean that they need to have heading, marking, tackling, positioning, strength between 13-20. For wingers would be nice to have good work rate as they are going to get back and play as WB's when defending. I always put players to practice defensive positioning so I recommend you to do that.
Here are some images from my FK Partizan save. I have won everything, except Champions league and Europa league, but played in quarter-finals of Champions league.
Hope you will enjoy in this tactic and feel free to comment and ask anything you want to know. GOOD LUCK!