You can download the special "Christmas cake box" for free.
 
 It's very cute with a handle and a window ♪
 
 ❶ Print A and B one by one on A4 size cardboard.
 (If you have an A3 printer, print one sheet using A3 data)
 ❷ Cut with a cutter along the line.
 ❸ Glue.
 ❹ Fold and assemble
 ❺ Stick a transparent film on the back of the top plate if you like.
 
 
 Difficulty: ★★★ ☆☆