Help washing Meta Old Emblem print in black

Hi there egl,

I wanted to know if any of you have had experience in washing this print. I've had a look at the list of things that can and cannot be washed but this specific print isn't listed. I haven't had any luck googling around either :(
I own this jsk in BLACK and I realized that I have hardly ever worn it... because I am afraid of dirtying it and I have no idea how I would wash this!
Any help is greatly appreciated, thank you in advance. :)