Take an origami sheet.
Fold it along the creases to the centre.
Fold the left and right sides as shown to make a crease.
Fold all the four corners towards the inside.
Fold the left and right corners inside.
Fold backwards from the centre.
Open the inner left and right corners backwards. Do the same on the other side.
Fold the right side backwards and left side upwards.
Make the eye of the pig and your pig is ready.