I didn't know much about Death Note, when my friends started cosplaying it. But when the first volume was released in Germany I started reading it too and since Misa's sooo cute I said I'd like to cosplay her.
These are my two first 'costumes' - closet cosplay as most Misa cosplayer do, but I'd say it's not that bad, since Misas clothing style is pretty cool XD

Book Fair Leipzig 2008