Spent the night out of town and have been doing some sanding on a blank I've had for a long time. Using it as practice.

Sand edges (Possibly sand overall, roughen blank for glue)
Repair cracked areas
Attach hinges
Attach elastic (Hinges, back of head)
Modify chin cup as needed
Replace tearduct mesh
Line mouth and top half of blank (Velcro for cleaning)
Cover epoxy lip for reduced clacking
Add teeth and tongue (Bottom jaw only, velcro tongue)
Foam as required (Remember horn area)
Attach horn, possibly magnetic?
Sculpt ear forms
Mark where velcro will be attached (For removable skin)
Tape blank, draw out markings if added

More to-do bullets will be added later, just a lost of things I can remember right now.