Hey!
I remember posting asking for advice when I was a newbie, the girls on here are honestly just amazing at newbie advice so I probably can't add much more.
1) Your first few are always the most nerve wracking - the nerves pass soon enough!
2) Go independent. You don't need an agency when you can run your own time through AW.
3) Always remember you can walk. If they're rude, make you feel uncomfortable, push boundaries etc, walk.
4) Be confident when telling them no. Make your own mind up about what you'll offer and stick to it.
5) Save!
Im in Merseyside, I'll send you a message in case you need a buddy, coffee, rant!
Xxx