So Sunday night I pulled the trigger and requested the package I wanted from CreateSpace, including some basic cover design, some publicity materials, a book review, some layout help, etc. On Monday, the consultant I'm working with put everything into my CreateSpace account shopping cart and I logged in last night to purchase and set up the logistics.
That part was fairly simple - you just log into your account, go to your cart, pay, and there you go. What happens next is a change in your Member Dashboard. Backing up a second, CreateSpace has a certain process for setting up books. You create your "project" (i.e. one of your titles), upload some files, select some settings, etc. When you sign up for the extra features, you have to go through one of their publishing consultants to get them activated, but then it just expands your dashboard for that project so you have more options.
I had to fill out a questionnaire with details about the options I picked - things like what I envision for the cover, what I want the tone of my promotional materials to be, summaries of my book, etc. I also selected my internal formatting templates, fonts, and how I wanted my front matter to appear (those are the first few pages inside any book stating the author, title, dedication, copyright, etc).
This has all been pretty intuitive so far, so I'm looking forward to the next steps and seeing what my project team puts together. After making your selections and filling out the questionnaire, little clock icons appear next to those segments of your project dashboard to show that your project team is working on their different elements and will notify you when you need to do something else. So now it's just some hurry up and wait.