Step 1:
You need 13 papers of 20x20 centimeters and
about 15 papers of 10x10 centimeters for each wing.
Prefold in half

Step 8:
Pull open.

Step 6:
Fold in half

Step 13:
Glue the other 10 large feathers to the model, use the yellow line as guidance.

Step 12:
Glue three large feathers together and lay them horizontally.

Step 11:
This is enough for one wing

Step 10:
One feather is done.....

Step 9:
Curve the feathers for the right wing to the right and the ones for the left wing to the left.

Step 5:
Fold over these two lines

Step 7:
Make diagonal zig zag folds

Step 3:
Fold the edges to the centerline.

Step 2:
Fold the edges to the centerline

Step 4:
Fold over these three lines.

Step 14:
Glue the small feathers to the top edge, see yellow marked area in the next picture.
The left wing is made the same way as the right wing (mirror wise).

Done! This is an Origami video tutorial for making the Eagle Wings: