fishn,
I learned how to skin heads by skinning coyotes. It is pretty easy if you take your time and are patient.
On a backpack hunt there is no way I am going to carry out the head when it only takes 15 minutes to cape out the head and cut off the horns on a deer.
The tough part on a deer is skinning around the horn bases and remembering to cut deep under the glands right under the eyes.
If you contact the taxidermist you plan to use he can probably give you a card to take to the field with you with instructions on what to do.

The biggest mistake people make is not leaving enough cape. Don' t be shy about leaving lots of cape. Better to cut way back on the body than to cut too close to the front shoulders.

As the other posters said if you have no experience and have no time to shoot a couple coyotes to practice on then leave as much of it as possible to the taxidermist.