"How to Draw the Animated Nexus" is on Kickstarter and Indiegogo with "The Battle for Thuneworld" as a Collector's Edition Ashcan, Volume 1 of 5.
What is an ashcan, you ask? Quick history lesson :) Enjoy!...
Because each new issue of a comic book requires new artwork, the design process is part of the manufacturing process. The exception is when a new comic title or series is first introduced. That design process involves the same creative and artistic abilities required to produce any new work of art and may include idea generation, preparation of sketches, and the development of a series of refinements before the final characters and themes emerge.
The final product of the initial design process may be a prototype comic book known as an "ashcan," a term that was first used in the 1930s when comic book publishers sought to protect new titles by copyrighting them. Rather than take the time to develop new characters or plots to go with the new title, a publisher simply took pages from a previous comic book and pasted the new title on the cover. Once the publisher was granted a copyright, the pasted-up prototype was often thrown in the ashcan, a metal container used to dispose of ashes from the stove or fireplace and commonly found in many households and businesses of that era.
The concept of the ashcan was given a more modern meaning in 1984 when one comic book creator produced a limited number of black and white prototype comics for his friends and staff. In more recent times, several publishers have released small runs of ashcans in a variety of sizes and colors as promotional items for the full-production versions.
From: How a Comic Book is made