Watch the fan animation here: http://youtu.be/qdbCNXMRHmo
A breakdown of the animation in 50% speed.
-Sketching out the important frames, including the shading.
Clean-up + In-between:
-Inking the sketches, including other details such as shading, shine, blush, eyeshadow, etc. (Each in different colors)
-After the keyframes, the in-between frames will be made.
-Converting the clean-up frames into the real colors for the final result.
-Adding various filters, gradients, and blurs to the frames.
-Background plates. Not all are drawn/painted, especially the areas that are covered by the foreground elements.
-Various gradients (both screen and multiply) and lens dirt effects.
-Combining all of the elements. This includes the camera panning/zooming.
-Complete with screen filters such as chromatic abbreviation, cross-shaped bloom, color balance, etc.
Photoshop, Manga Studio 5 (or Clip Studio), After Effects, FL Studio, and Audacity.