Composing Music by William Russo

I have tasked myself with staying one step ahead of my students as we work our way through William Russo's book, Composing Music:

"Aimed at those who have some knowledge of music but not formal training in composition, this concise introduction to composing starts right in with a brief composition exercise, then proceeds step by step through a series of increasingly complex and challenging problems, gradually expanding the student's musical grammar."

Yes, please! Let's go!