From the few pictures you've posted it looks like you are a very pretty girl, you just need a portfolio. So your first priority should be to hook up with a photographer and start shooting. Most of the online guys will want you to shoot nudes right away, I would avoid that if I were you until you get established in the area of modeling you want to excel at. April Berry...
http://www.modelinsider.com/4874  is an example of an online model that is going to have success without having to shoot nudes at first, or possibly never. She would be a great source of information and help, reach out to her. Rachel Jay has been at this quite a while and I don't think she has done any nude shoots either. Her site is...  http://www.modelinsider.com/241

I shoot commercial ad projects, the models I use are generally good actors from either local theater productions, the film industry or sometimes the music industry. The ability to be emotional in front of a camera is the single biggest asset you can have. If you're going to look into the lens during a shoot, own the damn thing; make your emotions so visible there can be no mistake as to your intent. Never get caught looking like a deer in the headlamps of a car. Don't think that every frame requires your full attention into the lens; off camera looks can be so forceful and engaging if there is an emotion behind them.

Don't slide into just shooting glam crap all the time, do some fun, good girl lifestyle as well. The more well rounded your folio is, the more attention you will receive. Have fun with it.

I almost hesitate to jump in here, since Bob has covered much of what I would have said.  But there are a few small things I can contribute.

First, the stats you have listed in your profile are wrong.  At least hips measurements is incorrect, and I'd wager the waist measurement is also, based on my experience in measuring models - you need to actually measure them (waist:  the narrowest part without "sucking in"; "hips" are the fullest part of your butt) because photographers do pay attention.

Second, let me echo Bob's recommendations of people to reach out to.  I know both April and Rachel, and have worked with both of them.  They are very different people, with quite different approaches to what they are doing, but both well worth listening to if they will take the time.

Finally, I took a look at the genre list on your profile.  Almost all of it is "mainstream" kinds of work.  Bob suggested that you avoid "glam" - or at least doing too much of it.  Unless, of course, you enjoy it a lot, in which case there should be a ready market for you.