So here's today's work: I completed the book as a whole.
Many positioning and sizing adjustments in the content (e.g. making the text in the centre of *both* the book and the iPhone's screen).
Many refinements (e.g. search field's shadows & highlights; book's leather texture).
And many new things (e.g. the centrefold, the binding, and the bottom of the book).
Big thanks to @desaulniers for the critique in the last post which has sparked a few more ideas for my sketchbook.
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