/cgl/ - Cosplay & EGL

I'm making a horror film and need a costume for the ghost miko. I got a store bought costume today and I plan on modifying it so it resembles the picture here. I thought I'd run some ideas past you gals and maybe you can stop me from completely fucking it up.
I plan on:
>cutting the skirt vertically with a pair of scissors so it resembles the picture (maybe leaving it a little longer just in case)
>cutting one sleeve like the picture
>soaking the shirt and skirt in some piping hot brown tea for 24 hours so the colors look faded and a little dirty
>using sandpaper and a wire brush to fray the edges of the sleeves and skirt a little
>sponging some brown paint and maybe coffee on the very edges of the long sleeve
>burning the bottom tatters of the skirt with a torch to blacken them a little
Do you think this is a good strategy? Any other recommendations to make my costume look old and warn and spookier?