Auditions: Not So Simlpe for Serious Actors

So me (hopefully me) and the rest of the people in my choir class that made it through class auditions have auditions for parts in the musical (Aladdin). Most people who aren't trying out say things like "good luck" and "you'll do fine" but does that really help? Maybe a little but not that much. Mostly we're just nervous and thinking that people think we'll do fine just puts more pressure on us or maybe it's that we focus to much on what we have to do rather than how we are going to do it. Whichever way it is auditions just aren't simple.