In doing my research for 1920s cloches, I notices that the adornment on hats had changed along with the dress fashion. It was considerable less and not as "fluffy". Thus the reason for making my own leaves and flowers of the fabrics I used on my dress. I also chose to adhere the flowers/leaves to the hat via silk pins. This way, they can be removed if I ever make a plain ivory dress or wish to use different flowers on the hat.
For the large dark teal flower, I just gathered the strip of folded and zig-zagged fabric, circled it into the semblance of a cabbage rose, ironed the snot out of it and then beaded it.