"create a (creative) manifesto and send it out for a self-promotion. Don't just say you're creative - SHOW them you're creative" Another well-designed piece to send. Though not really my forte -too graphic design, not enough illustration.
Using circles as a repeating element throughout the yearbook. You could use school colors, color scheme colors. Solid circles and rings. Play with transparency of the circles too. Another Cirle Brochure by Tony Huynh, via Behance