Different techniques for drawing wings on birds or fantasy creatures.
If you think of wings as an arm you can see the angles they bend in and the shape they take.
You can segment the wing into three parts to keep the shapes accurate too. Just remember that the feathers fold in and over each other as well as extending out when the joints move.
From one side you can see some of the different shapes a wing can take.
But no matter what position, wings are naturally curved down on the edges and should not look flat.
You can choose the amount of texture, flow and transparency for the drawing. If you don't want to do individual feathers (like on a statue), you can choose to only separate the feathers at the tips. In RMD the fill tool is really helpful set at 30% to 50% transparency.
And those are my tips on drawing feathered wings.