You must surely have some idea of your likes and dislikes. How about length, do you want short or long dares?
Here's a few to get you started.
1. Since your sig says that you have been naughty and need to be punished go to a public washroom. Get in a stall & remove all of your clothing. Once naked, spank each butt cheek 25 times hard enough to notice a change of color on your cheeks. Get redressed and go about your business. (This is a punishment I received by belgiandare for having failed to complete the dare he set for me).
2. This a dice dare I posted. Try it out. It goes through many categories so you should be able to find some of your likes and dislikes:
http://www.getdare.com/bbs/showthread.php?t=80983
3. Spend a day, outside of your home, with no underwear on or with underwear belonging to the opposite sex, this includes a bra.
Hope this helps to get you started. I'm eager to read your thoughts.