Okay.
Some auditions have an image level requirement. The season auditions are all like that, they might even have a Rank requirement, I'm not sure. I think, off the top of my head... Spring 7, Summer 8 or 9, Fall 10 or 11, Winter 12. Don't quote me on that. Look at the description, you'll see it.
If you want to get all the seasons done, you can start with Chihaya, Ritsuko, and Iori (if you can get trios). If not things get harder, but you still might be able to do it. If you start at January and make it to 7-ish by mid-March, then you'll be good. You'll have to audition a few times before then, I think... in SP, your stats decrease if you haven't auditioned in a while (6 weeks?), or if you haven't changed to a different genre song (13 weeks?). Remember that you're only in a preliminary. Once you pass, the real thing'll be a Promotion you can do. Takagi will tell you when (I think), then just... appeal every time you can.
Hit the lessons, get goods or perfects if you can (the lower your Tension, the higher return, XBox only though).
... A few seconds too late, I see. Oh well.