I think Kyle really got it right, here. If she's never been tied up before, it's always best to start slow and work your way up. A few questions either before or once you begin might really help you sort things out - and help ensure you get to play again.
Things like - "So, have you ever been tied up before?" If she answers "Yes," you can find out how, ie., hands behind, tied to the bed, chair, and so on. If she has, she'll be upfront about it, especially if she asked you to tie her. Following up with, "What did you like the most about it?" will give you more ideas as to what she likes. This is important, because if she likes it - and she will if you give her some of what she likes - you'll have fun too. You may find out that she's been grooming you for a while now, and a strict hogtie is exactly what she expects

- and you may also find out that her idea of getting tied up is really simple and playful.
If she answers, "No," to the question, you can still ask her what she likes about it - share with her what you like - and give her something in between. Here's the catch - don't give her verbatim, exactly what she wants. Give her most of it, but make it your version, otherwise the sense of surprise won't be there. Keeping a sense of surprise about it will keep it exciting - she'll be happily bound the way she likes, but wondering to herself, "What's he going to do next?"
With that all said, the best thing I've found for people that ask to be tied up is to be thorough. Tie them up so they can't escape, so they get the feeling of helplessness. Not too tight, but "safely' tight. And always apply the gag last so you can ask them how it feels.
Walk the mile first... then have the fun!