Adult Psychology Coloring Books

I’m putting together a series of three printable colouring-in books that double as concise study guides for adult learners. Each book will be 15 interior pages (plus a simple cover that mirrors the theme), delivered in high-resolution PDF ready for print-on-demand... (Budget: $30 - $250 AUD, Jobs: Adobe Illustrator, Adobe Photoshop, Content Writing, Ghostwriting, Graphic Design, Illustration, Psychology, Research, Research Writing, Visual Arts)