Here is how we do our.

We buy our flocking from Donjer.com. Paint the head around the white with Flat Balck Rustolem. I then put the head in a covered Rubbermail tub that already has the flocking in the tub. then I shake the head for a bit and TADA....you have a flocked head. The flocking may not be as good as from the factory but then the next year do it again and the second coat makes them rock solid.