Making an old looking 6-fold notebook (Part 2: assembling)

Complete notebook video : Etsy shop: Material list for A5 notebook: tea-stained paper(A4) - 80 sheets; design paper for leaflets(A4) - 8 sheets; 2,5mm cardstock - 5pcs; fabric / leather; paint(gold); magnetic closure - 2 sets; bookbinding glue - 200ml.