After gravity Falls went on hiatus, I went on to help out an episode "The Hero" for Wonder over Yonder, Craig McCracken's new show at Disney TV. The link below will take you to the original boards of the episode. It's only the 2nd half, so you may want to watch the episode for context.

  WOY_TheHero_Part2_boards

"Gideon Rises" Original chase sequence.

Here are the boards from "Gideon Rises" chase sequence. This is the original before it was cut down for length. Additional boards were also contributed by Mark Garcia and Alonso Ramirez.