Pre-Production: 
Video strategy/goals, 
Budget/scope, 
Reference & research, 
Reference storyboard using researched video examples, 
Main storyboard is made from sketches, 
Storyboard sign-off, 
Create Characters, props and background rendering, 
Animatic production, edits, sign-off

Production: 
Build animation/motion video, based on the storyboard 

post-production: 
Editing, Add graphics, motion effects, sound effects, music 

Final sign-off

Below is an example of the animatic vs the final video with references.