[noob question] What’s the design process when creating new parts for a build? (in my case, robotic arm parts in fusion 360)

Background:

I’ve been learning Fusion360 recently and I want to build a 4DOF robotic arm using a raspberry pi, camera module, and some micro servos.

I’ve been learning Fusion360 to 3D print the limbs and gripper of the arm but I’m having some trouble actually coming up with a holistic design for this robot. I was wondering if there was a process you use when creating a new design. Are there specific things you base a design off of or start with? Any help would be appreciated.

submitted by /u/bri_go
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