TPM asks some really good questions. Just because you attend a showcase where there are "loads of scouts" does not necessarily mean that you will be seen. We attended the PG WWBA 17U tournament in July and the most scouts we saw at our games was about five because only a few of the boys were in contact with coaches.
Do you have a video? There are plenty of free websites for recruiting where you can post your information, pictures, and video BUT that is just a start. Now comes the part that shows how serious you really are. You need to contact coaches first through e-mail and then with follow-up phone calls (one thing my son is suffering for because he did not do this). If there is interest, then you will hear from them.
Best of luck!
It is pretty late for a 2012 as far as many D1 school options, but there are still plenty of other schools looking for good players. Get your name out there and start making contacts. Call the coaches at schools you are interested in and schedule a visit along with a campus tour.