Unable to switch cloths on an avatar using three.js [closed]

I am currently working on a project with three.js. I want to switch different types of clothes on a human avatar(model).
I am also new to three.js.
I have tried using ray casting but not working. Does anyone know how I can fix this?
Also, when I try to load the different clothes (models), they appear very tiny on the plane while the Human model appears very large.