Step 1:
Arrange the case so that it is right-side up with one of the square, narrow ends facing you; it can be standing on one end or laying flat.
Step 2:
Locate the 4 flats that make up the narrow end of the case; the two inner flats should be vertical with two horizontal outer flaps partially covering them.
Step 3:
Using your thumbs, press the vertical flaps towards the inside of the case, partially separating them from the horizontal flaps.
Step 4:
Slide your thumb under the top horizontal flap and pull it up to partially open the case.
Step 5:
Slide your fingers under the bottom horizontal flap and pull it down to finish opening the case.
