Wear a suit, pin your eagle medallion on, tell a story, invite him up, ask him
to repeat the slogan, motto, oath and law then give him the Eagle Charge, (there are a number of them on google), if an eagle neckerchief has been provided you place it on him, then you present him as an Eagle Scout to the audience and ask his parents to come up and pin his medallion on, you then go sit down. At this point the new eagle should tell about an important leader/mentor and present the mentor pin. ....and done.