I would strongly advise against this. Like them or not, minifig animations are still one of the best ways to get started with stop motion animation. If you want to practice and improve with it, I'd suggest starting there, and then once you've gotten things like lighting consistency, camera shake, and frame count/timing resolved, move on to more complex figures.
I did an actual animation class, learning to do 2D and 3D first, before I split off to do stop-motion. By this point, I had a lot of experience involving how a normal body would move as well as using stuff like anticipation, stretching and weight etc.
Minifigures, in comparison to Bionicle/Hero Factory etc don't have that. They're extremely rigid. Unlike models with proper joints, there's not a lot of room to add character to a motion and the walk cycles are tremendously tiny which really, really bugs me.
I use shot lists and pre-drawn keyframes/animatics to plan my entire anaimation. Each also has a checklist for what each individual frame requires. I've got access to a studio so lighting is consistent and I make sure to pin all my characters that aren't attached to a rig. Camera shake is added in post, because it looks terrible when you do it manually with the camera.
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