My Goddaughter is heading off to college this fall (she is a bigger staw wars geek than I am), and I promised her a cool Star Wars item for her dorm room, and after a long time of thought, I got my idea......a fish tank...but not just any fish tank.....

I want to make a Luke in bacta Fishtank.
I have a 10" and 12" Diamater acrylic cylinders, and I can make the all the fishtank related items.
What I do need help with is making the Luke figure. I have never worked with 12" figures before, and I have no idea where to start to get one that is in poor condition so I can start experimenting and not feel bad when I destroy it trying my ideas out. I assume I would need to customize the facemask and Luke's "Swim trunks". Does anyone know of any resources (websites, videos,etc) that I can look out so I can teach myself how to do that? Or better yet, anyone willing to do it for me?
Thanks
Batz