Need some orientation into modding and tools based on the requirement below. Thanks !

Hello folks, i am joining the mod scene to take things into my own hands.

I have few things i need to accomplish for which proper mods don't exist. I do have experience in solidworks. I know raster and vector editing.

I need help from someone to guide me to where i should start for the following goals:

1. Compile nier walking animations mods from nexus using custom files to have idle run and sprint animation from nier and defualt walk animation

2.1 Modify nox night maiden armor mesh to have more pronounced chest like the push up mod on nexus

2.2 modify color scheme of the armors. I want to whiten and more golden the cape. And make the other armor parts look more royal, clean and whiteish? Uf that makes sense?

So i was hoping someone can please point me to what tools i need and how to get started on these foolish ambitions.

Please don't extinguish my flame