Flipping the paper over once again, focus your attention on the nose. Pull the triangle forward until you reach its limits, as shown in the second and third photographs.

After you have done this, pull the underlying layers of paper forward to sit over the leading edges and crease them as shown in the fourth photograph. After making the creases, allow the paper to return back to its original location. While the paper is like this, unfold the airfoil folds on the opposite side of the paper as shown in the sixth photograph. With this access, now tuck the previous folds you made by reversing their direction.

When the paper appears as it does in the eighth photograph, pull the nose backward along the existent fold line. With the triangle now sitting over the folded underlying portions, pull the tip forward again until it sits over top of the rears of those underlying layers and crease. Once this is done, reverse the fold for the triangle to secure itself under the lower layers as shown in the eleventh photograph.