If you haven't figured it out by what he means with "croos both open hands in front of the face, think of it as you are grabbing the inside of your opponents dobok, then twist out, then pull and front kick with your back leg simultaniously.
Ah! that's so simple, thank you! I wasn't sure if the palms were facing me, away or each other lol! But that does the job nicely! I suspect the book does it deliberately to make sure you ask an instructor which is a fair one really.