This is how to make it
Start with 14cm/22,5cm
Score 4cm in from all 4 sides, and cut to form the box (but don’t put in together yet )
Distressed all edges on both sides with distress ink
Choose some papers for inside and outside of box
On the outside you need: 14cm/3.5cm 2 pcs
5.5cm/3.5 2pcs
On the inside you need 14cm/3.5 1pcs
5.5cm/3.5cm 2pcs
14cm/5.5cm 1pcs
Decorated the out side
On the inside put the bottom piece in first then the sides
Now glue the box together
Now add the long side this will hide the edges
For the back of the box use a spellbinder die but only the top of the paper
Cut the paper to fit these dimensions , 11.5cm/13.5cm now you have the room for a panel around the paper
The height for this is 7.5cm
Glue the paper onto some cardstock
And cut the shape by hand with some good scissor
For the bottom of the box cut some card 15.5cm/8.5cm you could go round with a pinch
Decorate the back of the panel before you attach it to the box on the inside
Decorate as you like