Goose, the Mink are fleshed just fine. I don't know how to age Mink by their dried skin. My guess is the one on the left is an XL Male, right one is Female?
Your Mink look good, nice job.
In your picture...suggestions...
Pull nose down to just catch end of board, center the eyes and ears on both. Also, center legs.
Plus use a few more pins to get a straight line of back fur (tail side). Pin and pull fur to tail (pleat) to eliminate the loose flaps on edge of board.
Like this...
MINK- not pleated
COON
Goose, these are old put up pictures. I now pleat the back fur towards the tail and still keep the straight line, uniform look. By drawing back fur towards tail, will give you dense fur at the inspection window (on belly side). The Coon pictured on the left, has pleats, but I now pull a bit more fur to tail and pleats are more pronounced. Pleating is common practice nowadays for Mink and Coon.