(AP Photo/John Locher)LOS ANGELES, Calif. – Julia Louis-Dreyfus and Will Ferrell are standing on the Oscars stage performing some hilarious material for a few dozen people who are in stitches watching the two comedians. Louis-Dreyfus and Ferrell are just a few of the stars who circulated in and out of the Dolby Theatre to rehearse Saturday, including Tom Hanks, Salma Hayek, Jane Fonda and Mahershala Ali. But the stars weren’t always confined to the stage, especially if they arrived a little early. Makeup artists Antonio Rael has been standing in for big stars for 34 years. Rael was talking about the stand-ins but that doesn’t mean some of the stars aren’t anxious as well.