Well Brett... I don't understand why you would like to know this. My only answer for you... is to hang out around parks or other fun places that kids like to go to. Make sure to bring your cousin along. And watch the children play. Find out which one looks like they'll behave the best for you two. Then just go offer the kid candy, and slowly lure him back to your house. As easy at that.
You should take her out to a nice restaurant and then a hit Broadway musical. Cousins really like that sort of thing. Then afterward back to your place for a little light conversation. Talk about things you have in common like interests and grandparents. Then when the moment is right feel her up. Make sure to get just the right mixture of light necking and heavy petting and then you're home free. Let me know how it goes.
