I held my breath and tossed it into the washing machine (after the tub had filled with water). I learned a bitter lesson having the water spill directly onto the fabric. I did one gentle cycle on cold and two rinse cycles (gentle cold) for a 25% shrinkage.
And here is my least favorite step and my most unflattering picture. (although it tells the story) I spent 5 hours blocking the blanket directly onto the carpeting. I literally wore the skin off my knees. I am happy to say I weigh 60 lbs less than I did in that picture.
Even if I moved all of the furniture out of my new place, I wouldn't have the room to block a blanket. I can't say I am sorry.