How do I go about making an object from scratch and putting it into the game. A shoe insole. very thin but manipulatable in game?

My knowledge of NIFscope is limited to knowing there's a red line and a blue line... I presume they gyrate.

just putting it out there right now... Can't think of any vanilla objects that could be used as a template... A book with all texture removed and replaced with a picture of a cardboard insole?

Cheers.

Is this insole supposed to be in a shoe? Or is it like a Dr Scholls thing with a Perk added to it to make walking/running better? If the latter, any shoe shaped flat object would work.