Do you have any suggestions on resources for 3D Preview?
https://www.youtube.com/watch?v=mbK2xqG2glM&list=PLhs1urmduZ295Ryetga7CNOqDymN_rhB_&index=1
he has videos of how to make 3d preview. Also, you could go to his GitHub and see the codes.
I recommend this as well, This playlist is all that is needed for a 3D preview.