Lower wing, left
Step 1 / 5
d': Bottom inner layer: turn 90°, front face goes left
The front left edge has its upper wing and middle piece matching. The missing wing is low on the front right edge; its right color is the pair's front color.
The mirror of the lower wing on the right, done with the left hand.
Step 1 of 5: d'. Bottom inner layer: turn 90°, front face goes left