What stage in the animation process takes most of the time ?

Hi bro I have a question When you about to start doing animation with a script like you make for zackDfilms How do you start planning the animation so you get what you want ?

Hey bro, quick question — for your 3D models, do you usually make them yourself or get them from somewhere online? My modeling is intermediate, but it takes quite a bit of time, and I’d rather focus more on the animation part.