What's going on in my clay studio? A lot of learning by mistakes.
I just finished taking a six-week online class on working with porcelain. I learned a lot of theory, but only by practice will the theory manifest in my work. What you can and can't do with an object you are creating in porcelain clay depends on the dryness of the piece. At some stages of dryness you can add to the piece; at some you can cut and carve; at some you can burnish. The piece is more fragile at some stages than others.
So far, I believe I have ruined and recycled more pieces than I have completed. (That's the economical thing about clay: you can use it again and again.)
In preparation for making wings, I drew the wing of a pirate eagle, the wing of a bay winged hawk, and finally the underside of a kestrel wing. My porcelain wing was well begun, and I was hopeful. But not yet knowing how to manage the degree of moisture, I let it get too dry for the finishing I needed to do: the feathers began crumbling. My second attempt fared no better, nor did the third. Now I know that I need more practice on simpler objects before trying to work such detail. I hope I can report a measure of success before long.