From what I have seen, if you want to submit a girl for consideration, I believe the appropriate area to post your model suggestions is in the "Nude Girls" thread.
If you are serious about actually seeing her here, DO YOUR RESEARCH FIRST!!!
Get a couple (2-4) of tasteful photos of her, with the originating agencies watermark clearly displayed in each photo. Do not crop the photos! (the photos can be clothed, semi-nude or fully nude but NOT in hard core situations).
Find her Bio's, there are several places to look for them. The members want to know about her and her experience, age etc.
Several of the bio's also include her agency or management contacts, INCLUDE THOSE.
Start a new thread in the nude girls section with her name in the thread title. Something like "I would like to see Jane XXXX here" has been used in the past.
Add the photos, perhaps include a poll with yes, maybe or no as options, add the bio and contact information and some of your own tasteful comments as to why you would like to see her here.
I personally get kinda turned off before I even start if the member says things like "she has huge TITS" or "her pussy is sloppy wet" etc. etc. Yes this is adult entertainment (Porn) and some guys like that sort of thing but some don't, however almost no one gets offended if you say something like, I think she is beautiful and the way her body is shaped really turns me on etc. etc. I try to remember that all these girls are someone's ***** and that they are doing the best they can with what they have to offer. There is no need to be degrading or disrespectful. But that's just me.
Once you have posted the photos, bio, contact info and your personal comments, sit back and wait for the members to chime in with their comments and votes. If the girl is widely accepted, Totem staff will usually jump in and let us know that they have sent her to the recruiting department and it's out of our hands from there. Hopefully a few weeks or so later we will hear that she is coming to do a shoot for us.
Oh, and don't get disappointed if you get some negativity over your suggestions.
It's common that some folks here vote no to what I thought was a perfectly acceptable choice for this site.
Everyone has their own likes and dislikes and some express them stronger than others.
And some of them will be fairly crude or vulgar in their discriptions or like and dislikes.
And further, others (I call them the "Curmudgeons") will vote no on a girl who is 9.9 on most everyone else's scale simply because the sun didn't shine long enough that day for them or some other inane reason that defies sense... ;-)
jump in and have fun!