Rae, big (mega big) congratulations on this!!!
I know you are going to do great. Don't be worried that the other gals on the team are "seasoned" and "aggressive." You can build a great client base and do very well by just being your very helpful, wonderful self. I shop a lot and I worked for many years as a SA. The things that I love in a SA aren't that they are seasoned or aggressive. It is that they are interested, they hear what I am telling them, and they follow through. I return again and again to my favorite SAs.
I've been hooked up with a personal shopper at Nordstrom twice. You know what? After the first meeting, they haven't contacted me again. And I bought a pretty decent amount each time. I'm pleasant and friendly always without exception (especially since I've been on their side of things). I hang up my clothes in the dressing room. I don't dismiss things outright. I like to shop. A lot. That all leaves me to think that the thing is that they aren't really all that interested or motivated. If you apply your drive, your charm and your incredible knowledge of style, you are going to be a star in no time. I just know it. Now if only I can get you to transfer to the Portland store...