I usually start mine the next day. I just cut out as much of the meat as possible. Then I take a thick piece foam and spread the fan out on it. Then I put a small nail right under the chunck of meat and then another couple on the bottom fan feathers. I then pour a combo of borax & salt all over the fleshy part and rub it in. I continue to apply the salt/borax solution several times a day for a couple of weeks. I put the fan on the foam in a dry place where it can lay flat. Then I just order myself a plaque (usually a Quaker Boy)and in a month or so put it in. I haven't had any problems w/ bugs or anything... You just need to keep it stored in a dry place while you are treating the meat.
I hope this helps. I've seen taxidermists do it better... but I've also seen them do them worse! Good luck.