In all of our drawing tutorials, we begin with a series of construction shapes and lines that help us to get the proportion, symmetry, and shape right before we add any details.
We begin the wings sketch by constructing the top line of the right wing. Find the center point of your canvas, and just to the right of it, draw a straight tilted line.
To finish the construction of your first drawing of wings, you can draw a large curving line between the bottom of this short line and the right end of your first top line.
In order to build up a realistic feather pattern, we are going to do it in a series of layers. We begin with the top layer along the upper curved line of each wing.
You are now going to draw the large final feathers on each wing. These wings should be large and curved all the way to the end of the construction shape.