Step 2: Make Your Paper Square
Do as shown in images to make A4 paper square.
Fold your paper to make a triangle like shape.
Cut the extra.
Open the fold.
Step 3: First Folds
Fold the half in half .
Open the top flap and flatten, turn over and repeat the flatten to obtain a triangle.
Step 4: First Side Flap
Fold the sides and open again.(only the top flap)
Then fold again to meet the creases.
Then open the flaps and flatten.
Fold the half of the flaps backwards.
Open the flaps from the middle and tuck the top in,and fold again.
Step 5: Second Side Flap
Fold the flap into half.
Open the paper and the bottom edge to make the box
Ps. The tucked in flaps go in the box (see last image )