Step1: Fold the paper from bottom to top and unfold it. Then fold it from side to side and unfold it.

Step2: Keeping the paper on the table fold both the long edges into the middle crease. Then unfold them

Step3: Fold both the short edges into the middle crease and leave them there.

Step4: Fold in all the corners so that they meet the nearest crease as shown here.

Step5: Fold back the edges in the middle so that they cover the corners.