Yip,
Yday went shopping with TB+HG. No problem.
About the wax plate, you will get this with your impression kit, when requested.
you just warm the wax, place it in your mouth, and bite down. But remember to push your lower jaw a bit forward. (I alligned my front lower and upper teet)
Then when you receive your braces, you will notice that your lower jaw cannot be pushed backwards further then you make the impression. They kinda lock your lower jaw from moving back.
I love the feeling as its a constant reminder you wear braces.
Kind regards,