Online T shirt maker website with Unity?

Hi guys,
I'm looking forward to create an online T shirt design website.
Eg :
https://www.akumarugby.com/kit-designer?gender=mens
http://dyo.blksport.com/

I want to do this in 3D so the customer can have a 360 look at what they are designing. can any of you tech savvy guys point me in the right direction on how to do this?
I stumbeled on this link but it has been removed from the asset store.
https://www.assetstore.unity3d.com/en/#!/content/94121

Thank you for taking the time to read n answer!