"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.
Bumi Parahyangan promotional poster and brochure by Rittsu, at Behance. Triangles don& seem to be popular shapes to use in graphic design, but Rittsu executes them well here. Notice the subtle arrows pointing right to persuade the viewer to read on.