Hi, welcome
I'm Harlow also new to this site, but not new to the industry, your in good hands here saafe!
Sounds all good for go at your end, just a few silly little tips for you, but you might find them helpful?
1-When you have been given the fee, take it to another room to count it & keep it safe.
2-Have a spare bottle of lube in that room, & pop a bit on below
that way if your good to go & he'll think it's natural, it can really help with comfort if your nervous. Also keep some condoms in that room, so when you've counted the fee you can pre-tare the wrapper & put it in your bra/hold up etc. There is nothing worse then oily hands from the massage bit, to then goon to fumble with a wrapper for the sexual bit.
3-Also have some lube/condoms next to the bed (always) you never know how many you'll need for a service. And when your more confidant you may want to make a little show for him with the lube or get him to do it?
When it comes to right & wrong only you know the answer to that, it's what feels right & safe for you personally. Always come & ask questions & get reassurance, but as get to know the game, you'll soon make your own rules.
The best of Luck Harlow x