1.) This should go in Writing Workshop.
2.) Learn the difference between your and you're.
3.) Stop abruptly killing the player with a single boring line for no logical reason.
Really, 'write good' was the best advice given so far. Most of the elements of writing a quality CYOA are the same as writing a regular story. Get a good handle on the basics there--proper spelling and grammar, plot, pacing, characters, dialogue-- before you worry about complicating it with paths and branches.