to do the back heel lift shot that you were talking about you need a player with very high tecgnique, eg.Adriano. your must be ni he opposition penalty area with your back turned to the goal and a bit to the left of the goal, since adrianos left legged. youd have to be a bit to the right if you were using a right legged player. you must be quite deep in the box. when your ready press square. he should do the back heel shot. if you want to get more lift(although it usually ends up in row z in the stands) just after you press square you must press L1. hope this helps.