Step 8: Take the left hand corner and fold it up like this towards the centre, making an angle of 90 degrees.
Step 9: Then do the same with the right hand corner, making a square.
Step 10: Fold the top edge to the centre line
Step 11: Fold the right edge to the centre.
Step 12: Fold the top left corner down to the left hand side.
Step 13: Fold the top right corner down to the right hand side like this