Keeping a long story short, I have found some files for PokeBalls that I like and I have begun 3D printing, and I have the core files and permission, but I'd like to start creating some of the Great/Ultra/Heavy/etc balls, but I am awful with fusion/blender. Converting the Pokeball shell to a great/ultra doesn't look too insane at face value, but again, I can't really say. For a general idea of what it turns out to see attached (albeit badly made) end product.

Printed and Assembled:
https://imgur.com/a/futuristic-pokeball-original-by-neotendar-on-devianart-fBX40jZ

Original Concept:
https://www.deviantart.com/neotendar/gallery/23953600/pkmn-unlimited-project

Basically I'm either looking for help, or advice, on how to even start with this.