Hyo Ahn's Origami
Prepare to turn the paper over.
Turn the paper over.
This is the back side of the paper.
Prepare to apply a valley-fold in half and then unfold.
Fold the paper in half horizontally. 
Unfold the paper.
Prepare to rotate the paper by 90 degrees.
Rotate the paper by 90 degrees.
Apply another horizontal valley-fold and then unfold.
Fold the paper in hlaf horizontally. 
Unfold the paper.
Prepare to turn the paper over.
Turn the paper over.
Prepare to apply a valley-fold so that the left-bottom corner sits on the vertical middle line and then unfold.  We call this a 30 degree valley-fold.
Apply a 30 degree valley-fold.
Unfold the paper.
Prepare to rotate the paper by 90 degrees.
Rotate the paper by 90 degrees.
Prepare to apply another 30 degree valley-fold (2nd) and then unfold.
Apply the 2nd 30 degree valley-fold.
Unfold the paper.
Prepare to rotate the paper by 90 degrees.
Rotate the paper by 90 degrees.
Prepare to apply a 30 degree valley-fold for the 3rd time and then unfold.
Apply a 30 degree valley-fold for the 3rd time and then unfold.
Prepare to rotate the paper by 90 degrees.
Rotate the paper by 90 degrees.
Prepare to apply a 30 degree valley-fold for the last time and then unfold.
Apply a 30 degree valley-fold for the last time and then unfold.
Prepare to turn the paper over.
Turn the paper over.
Prepare to apply a mountain-fold and then a valley-fold.
At first apply a mountain-fold and then a valley-fold. 
Prepare to unfold the mountain-fold.
Unfold the mountain-fold.
Prepare to rotate the paper by 90 degrees.
Rotate the paper by 90 degrees.
Prepare to apply a mountain-fold and then apply a valley-fold.
Apply a mountain-fold and then a valley-fold.
Prepare to unfold the mountain-fold.
Unfold the mountain-fold.
Prepare to rotate the paper by 90 degrees.
Rotate the paper by 90 degrees.
Prepare to apply a mountain-fold first and then a valley-fold.
Apply a mountain-fold and then a valley-fold.
Prepare to unfold the mountain-fold.
Unfold the mountain-fold.
Prepare to rotate the paper by 90 degrees.
Rotate the paper by 90 degrees.
Prepare to apply a mountain-fold first and then a valley-fold.
Apply a mountain-fold and then a valley-fold.
Prepare to unfold the mountain-fold.
Unfold the mountain-fold.
Prepare to apply a valley-fold and then unfold.
Apply a valley-fold and then unfold.
Prepare to insert a flap into a pocket.
Insert a flap into a pocket.
Prepare to apply a valley-fold and then unfold.
Apply a valley-fold and then unfold.
Prepare to insert a flap into a pocket for the 2nd time.
Insert a flap into a pocket for the 2nd time.
Prepare to apply a valley-fold for the 3rd time and then unfold.
Apply a valley-fold for the 3rd time and then unfold.
Prepare to insert a flap into a pocket for the 3rd time.
Insert a flap into a pocket for the 3rd time.
Prepare to apply a valley-fold for the 4th time and then unfold.
Apply a valley-fold for the last time and then unfold.
Prepare to insert the flap into a pocket for the last time.
Insert the flap into a pocket for the last time.
