It's good to see that the thread is still alive
There are some prep materials for the feast for ex. the skytest but i think there is no way to get better abilities. Either you were born with them or not. Of course you can have fun with skytest but you can fail on the feast anyway. So be sure about yourself, be relaxed, want this so much and you will pass.
And the thread "Eurocontrol testing and interviews" is highly recommended, you will find the answers for all of your questions about the feast test.
Keep going!