A little trick to make you look a bit more professional for your cold reading scenes when you audition.
Memorize your first and last lines.
Aside from being the easiest lines to remember, just by their nature of being first and last, this also provides you with a great opportunity to connect with your scene partner/reader. You know that you're starting the scene connected with them. And you know that your finishing it connected.
People, in general, tend to remember the first and last impression of a person. Being "off the page" for that first line, gives you a chance to focus on the emotion in the scene, or your task. Then have your finger right there, so when you go down to the page, you're on track.
Memorizing the last line ensures that you're not buried in the page at the end of the scene, for the button at the end of the scene. Give it a try on your next one, see how it works. 🙂