Congrats on the 1st flat tail!!

Congratulations on catching some darn nice flat tails !

After your done skinning the beaver carefully lift both castors from the carcass and cut them off so there's still connected then hang them from a cord so they can dry evenly do the same with the oil sacks .
Carefully remove any extra meat that is attached to them. When they dry enough to get firmed up slightly either run them through a hand crank grinder until you like the consistency then add a few drops of the sack oil and some anise oil and stir it up.
I'd store this in a plastic jar with a screw on lid .

The down side to using lure when beaver trapping is after a catch is made the next beaver will bite it and try to run it off because of breeding season.
I hope this is helpful .
Allan

Here's the bad news. You won't be able to stop thinking about beaver trapping.