Ok,so lets start...
First,Get 1 of your square pieces of paper (for the same size as my box,make sure it measure 21 x 21cm).
Next... Fold the corners together so it makes an X shape on the square. Here is an example!
Fold in all the corners like in this picture.
Next open up the corners and fold the corners to the furthest opposite fold like this.Do this to all corners!
Cut following the folds but make sure there is still 4 squares left in the middle.Cut on the opposite side.Sorry its hard to explain here's a pic!
Fold in the other corners twice like so...
Next fold in the side tips of corners you just folded so it forms a square..
It should look like this...
<---(repeat step 1-8 for the second square)
Decorate your box now!
Next add your treats or whatever you want to put in it!
Enjoy your box!