The ones in the picture were held in place by slipping into a slot that I cut in my breastplate. Since the breastplate was tight and sturdy it held the wings up. People do the same thing with corsets, by slipping the U part of the bend into their corset.
I made a second pair that was worn like a back pack held up by clear bra straps too. So there are a bunch of options!
Hey there, sorry for the late reply. Hope there is still time to help!
I colored my feathers using floral spray paint by "Design Master" that I bought in Michales Craft store. If you can find the paint in the right color you can lightly mist it over your feathers to hopefully get the right color.
If you have access to an airbrush you could use a light colored air brush paint with some fabric medium mixed in and do the same thing.
For this particular set, since I wore it with a breastplate, I created a metal loop and was able to slide the loop through a slot I made in the breastplate so the loop sat between my back and the breastplate.
Some people will create a corset with a slot in it and use the corset to hold up the wings in a similar way.
I made a pair of blue ones almost exactly like this and attached clear bra straps to the metal "U" - it is a "U" instead of a straight line because it helps the wings sit flat and not roll. The straps are worn like a backpack.
I'm not quite sure off the top of my head. I used a thick one (about the thickness of a pencil) that way it was sturdy but I could still bend it with my hands.
I would suggest using the heaviest wire you can buy that you can still bend with your hands, this will ensure that the wings will support the weight of the feathers without deforming, but also that you can create the shape you like easily.
Remember that the smaller the number the thicker the wire.
I actually had people suggest to me I could re-use these for Princess AI. However the wings are for a character called Sizer from Violinist of Hamlen. Her wings are usually depicted as all white, or all red. But her red wings are described as "blood stained". This was my attempt at paying homage to both versions of the character, and it added a bit more interest to the wings.
Well turkey rounds are pretty stiff to begin with, they do not fluff or flutter. Fluttering of rounds may be undesirable because they may begin to separate and look ragged. In fact sometimes I spray my unpainted feathers with hair spray or clear spray paint just to keep them stiff and rigid so the don't begin to look ragged.
But the feathers had about the same feel and texture as unpainted ones. I would not recommend using the spray on the flats or fluffy feathers because the paint would probably cause clumping, perhaps if you diligently combed it as it dried.