Split 3D Figure With Connectors

I’ve finished preparing a 3D character and now need it prepared for printing. The final figure will stand around 10 inches tall and I’ll be running it on typical FDM machines with PLA or PETG, so clean seams and sensible tolerances are essential.

What I need from you:
• Break the model into logical, printable sections, and each color to be seperatly, legs, arms, palms, belly, (each color to be separate to print alone).
• Add sturdy keyed connectors or peg-and-socket plugs so the parts snap together accurately after printing.
• Hide cut lines along natural folds or costume seams to keep post-processing minimal.
• Check wall thickness and overhangs, making minor fixes where required for PLA/PETG.
• Supply the final, labelled STL set plus the editable source (Blend, ZTL, or STEP—whatever you work in). A simple diagram or screenshot sheet showing assembly order would be helpful.

Clearances of roughly 0.2 mm between male and female features usually work for my printers, but I’m open to your experience if you’ve found a better value.