7.) Highlight the bottom layer (wing) and then create a new layer by clicking the Insert Layer icon in the bottom left of the timeline panel and name this layer “m1”
Now the wings animation. Choose layer "left". On the frame 28 insert a new frame then right click and Create Tween Motion. On the frame 5 right click and Insert Keyframe. New keyframes on the frames 8, 12, 16, 24, 28.