Could correct my sentences?

Please elaborate the experience which you were absorbed in with your talent and passion.
Please expalin the background which made you absobed in it and what you lose and gain in the process.

Please explain the experience which you spearheaded to change and eradicate a bad custom in your group. If you had a confliction with your friends, please explain how you dealt with it.

Please explain the expereice, which you put your hear into to be the best person in a cerain field ,or which you made the best resul, with the elements below.
- the level of goal and the reason why you set up it, the difficulties and chlange, what you gave up to achieve the better result

What would be a caliber to achieve a good result in the field where you are applying? What did you do to gain that caliber? How much caliber do you have?