I have come to a corner routine that has made me to score 5 goals from corners directly and 2 or 3 more after a corner in the past 15 games.
Its very simple:
I think that the AI tries to stop your best headers to stop them from scoring, so i send the ball to the opposite side where i have them. Where i have my 3rd best header, or my striker if he is not Madzukic or similar. And the AI sees him getting the ball. It does not matter that he scores. If it happens the better, but this is not the goal. My objective is to trap the AI.
The best player with the combination of passing, decisions, anticipation, i.e., your best corner taker will see that. Its in the ME definition of anticipation, the ability to predict opponent decisions. So we will send the ball into the 1st post or the 2nd, depending if your 2 best headers in the 1st post have a weaker guy defending them, OR he will continue to send the ball back because the 3rd best header still as no big guy with him.
So:
aim to 2nd post
2 best header in the 1st post
3rd best attacks 2nd post
1 comes from deep
1 player to challenge the keeper
1 player sits on the 2nd post
1 player near the corner taker
1 player outside the box
the rest in the back
So, i have Jones and Balanta on the 1st post and i have Berardi on the 2nd. Pogba is coming from deep. Beradi sometimes shoots a heading to the net, 90% saved by the keeper, but sometimes passes the ball to Pogba that is already in the penalty mark ready to bang a goal. As this tactics bring more than 10 corners per game eventually Berardi will be marked and the ball will go to the 1st post where my 2 CBs score some goals too.
Now, why the guy near the corner taker and a guy outside the box.
Its very important that this guys know how to pass the ball because 70% or more of the times, the defending team will send the ball outside the box OR to the corner of the box, where you have 2 guys to get the ball again.
Also, the AI will put the 11 players inside the box and you cant score. Don't worry, you have 4 man outside the box ready to catch it and attack again.
Concluding:
You will have 10% chance of scoring from a corner, directly or not.
You will have 10% to shoot with no harm to the other team
You will have 70% or more of chances to get the ball back to attack again
You will have 10% or less to be outplayed in a counter.
I hope this will help until the end of the month to get more goals from corners, but i advise that this is not a miracle or a game breaking routine, it's just a way to score or keep attacking.
Cheers