I think that the converts have breached protocol at least a few times! Don't sweat it! I'm sure the priest won't. Re: the kissing the hand and the cross, don't worry too much about it. I made the same mistake and while he looked amused at the moment, I brought it up the next week and the priest didn't even remember that I had hesistated. It seems like such a big thing to us, but we're learning. We'll make a few mistakes here and there.
And plus, if you get to know a priest well, you can talk about the kissing of the hand. My husband is white bread American and he is not used to that custom at all. The Greeks kiss not only the priest, but each other ALL the time, so he's constantly surprised by the Greek women coming up to him and planting kisses on his cheek.
My priest assured him that it was okay for him not to kiss his hand if he wasn't comfortable with it yet. He's working on it.
And being so used to the Catholic Apostles Creed, I have definitely been this close to saying "and the Son" more times than I can count!
I'm glad you enjoyed it and hope you will return to the Orthodox Church for many more.