Decriminalization of drugs:all,some,none?; social costs,government involvement, medical use and abuse, glorification, moral implications.etc.

there are some ideas but i need more specific ideas, and how i would use these ideas. I need to write a 8-12 page essay and give an 30 minute presentation on this subject. I need help on what i should make my own main topics. I also need help on starting out the essay because i "suxorz" with intros and conclusions. thanks!