Three 3D Character STL Designs

I have three original characters sketched out and ready to come to life as physical models. I will share the reference images for each one the moment we start, and the end goal is to have them 3-D printed, so the files must be clean, watertight, and sized for printing.

Here is what I need from you:
• Concept refinement based on my sketches, with any stylistic suggestions you feel improve printability
• High-resolution, manifold meshes with correct wall thickness and no non-manifold edges
• Final delivery of one STL file per character, plus the native project files in case future tweaks are required

If any small test prints or split parts are advisable to avoid overhang issues, just let me know early. I’m happy to approve reasonable adjustments that make the printing process smoother.

Please include a brief note on the 3-D software you prefer (Blender, ZBrush, Fusion 360, etc.) and a link to a past project that shows your experience preparing models for successful 3-D prints. I’ll review portfolios quickly so we can jump straight into turning these drawings into tangible figures.