Liquid Glass on new cars?

I just ordered the double set of L I Q U I D G L A S S more precisely this here my question now : I get my new car next week Thursday …. I pick it up directly at the plant.. When can I apply the first layer LG and how should I best do it so that I do everything right? We are now going to the fall / winter… is it right that I also have to apply 2-3 layers on a new car? Is that right that I only “polie” from 15°C on My varnish is a pearl effect varnish (Misanorot) Thank you very much for your help Mfg Andy