I washed them in the sink with water and "gasline antifreeze" which I bought at Walmart. I hung them out on the clothesline (yes, it was a dry but windy day) and they dried very quickly.
Next step is what my group did. They chose their colour schemes and stamp sets and then got busy with creating their designs. It is important to use craft ink as it is meant for fabric stamping. I also recommend using a background stamp in order to get a "base" on your scarft.