Hi, The easiest way to recieve more submissions is to submit your TGP's to these places:
http://www.russiansubmitter.com/
http://www.thelinkmachine.com/
http://waycool.porncity.net/
http://www.advancedsubmitter.com/
http://www.freetgpsubmitter.com/
http://www.worldadult.com/tgsw/
You could also try this one, they send a list to you or you can download the list from their site:
http://www.cuteteen.com/ez4u/index.cfm
Hope this helps out, as for getting more traffic, you could try and make some galleries yourself, with a cool banner for free porn, don't make it to obvious to other TGP webmasters that you are trying to grab some of their traffic, or they won't list you.
All the best