The real thing is sold on another page.
https://miniaturepopup.com/collections/miniature-pop-up-book/products/miniature-book-kit7
A [a Apple Pie] 18x15x3mm
B Beauty and the Beast [Beauyt and the Beast] 17x20x3mm
C Hameln whistle -blowing man [The Pied Piper of Hamelin] 20x21x6.5mm
D [MORTE D'ARTHUR] 23x32x4mm
Simple process just to fold.
The cardboard has already been cut.
Tools to prepare yourself
1. Cutter
2. Tools to attach a folding line
(Naildot pens, ballpoint pens that have stopped appearing, etc.)
3. Stick glue
4. ruler
5. Mat
6. toothpick
7. Pens, etc. (for aging processing)