I'm not trying to be negative but I have a suggestion for your next one. Try leaving more of the iridescent secondary feathers next time. It really adds a lot of depth to the fan and looks really sharp too.
Looks awesome! I really like that style of plaque you used. I also dabbled in mounting my first turkey fan this year. Not trying to hijack your posted but I'll share a picture of the one I did this year. The pictures taken with my cell phone so its not the best quality.
I have used bondo in the past but now I have been useing Durhams water putty. I usually do my work during the winter and the toxic smell of the Bondo isn't something you want in the house. The water putty is cheaper, doesn't smell, is easy to clean up and gets just as hard and is easier to sand then Bondo.
I have plucked them and carefully set them out in order. Then replace them and go at the ends with a glue gun. Since there is no meat/fat there is no smell. If something gets messed up, peel off the glue and start again. It takes a few sticks of glue but works.
There is no such thing as a stupid question, just stupid people asking questions.