Model welding help

So I have created this flag model. Its not detailed yet with any country or anything cuz I don’t know if this idea will even work but I want to make flags that have country designs on them but I am unsure if

  1. I could make a UGC using a roblox studio model
  2. how could I weld this flag model to a player’s character as perfectly as it looks right now.
    image
    image
    Each weld constraint is welded to the pole part and everything is unanchored and cancollide off.

Roblox has extensive documentation on making UGC items.

This question is not only about UGC but also how would I implement it into a game