|Anchiornis in Flight|
The following 1-minute video gives a glimpse of the process.
(Link to Facebook video)
I make the paper-over-wire maquette by photocopying a flat plan drawing of the animal two times onto card stock. Then I make a glue sandwich with aluminum armature wire in the place of the bones. Then I bulk up the maquette with epoxy putty.
Here's an 8 minute video on YouTube of all three dinosaur paintings for the March issue of Ranger Rick Magazine.
(Link to YouTube video)