Something else that you might run into would be with the extruder extra prime amount (Cura terminology) or extra length on restart (Orca slicer terminology). On the wings, you may have some minor issues with the walls not connecting properly if this value is zero (it seems to depend on the printer). If there are small holes at the seams, you may need to turn this value up to around 0.2 - 0.5 mm^3 or 0.1 - 0.25 mm (Cura is by volume and Orca slicer is by length). If it's too high, you can end up with big seam lines on the skin, but it can help make sure everything connects right if it isn't doing so.
