Congrats on getting a BJD! They're so pretty, aren't they?
Do you know about a website called Den of Angels? Their forums are awesome!
Its completely for ABJDs, and has lots of tutorials and patterns for shirts and dresses and everything else!
There is also Undead threads- http://trimline.addr.com/undead/patterns.htm
And this page here has lots of links(not sure how many work)- http://www.dolldazzle.com/Links.htm
Den of Angels- http://www.denofangels.com/forums/index.php
I hope you make lots of pretty clothes for your doll!