Jan Brett - Author and Illustrator Jan Brett has recently posted numerous videos of "How to Draw" animals and other things, as well as author interview video posts! How perfect for a featured author/illustrator study!
Jarrett Krosoczka - Author and illustrator Jarrett Krosoczka shows from "Sketch to Finish" steps in his illustrative process. It's very kid friendly so they can explore on their own. (I can't wait to see him in person at our school in just a few weeks! I'll be sure to post. :) http://www.studiojjk.com/sketchtofinish.html
Loreen Leedy - Author and illustrator Loreen Leedy is a teacher favorite for her books that easily lend themselves to content area learning - and in a fun way! Check out her illustration process here. http://www.loreenleedy.com/books/35art.html
Janet Stevens: Author and Illustrator Janet Stevens shows the process of sketching and layering artwork in several sections of this page. http://www.janetstevens.com/today/index.htm
Aliki - Author and Illustrator Aliki illustrates the process of "How a Book is Made." The illustrations are from a book that was written with the same name. It's great to post on your classroom website for students to pull up at home with their parents to explain the process after the book has been shared at interactive read aloud in school. :)
Henry Cole - Illustrator Henry Cole shows elements of the drawing process in a kid-friendly manner with the use of his creatively titled subsections: "Version-ometer," "Process-ometer," and "Detail-ometer." He uses the clicking of the computer's mouse to his illustrative advantage when showing children his process of sketching.
Stephen Michael King - Illustrator Stephen Michael King shows how he draws a picture in under four minutes on this YouTube video found at the bottom of the linked page.