In free writing, you start writing/typing and continue for a set period of time, usually five to ten minutes. Start a timer, then begin writing whatever comes into your head with no regard for spelling, punctuation, cohesiveness, etc. If your thoughts are jumbled, write them down anyway. If all you can think of to say is, "I can't think of anything to say," write it over and over until something else appears.
When the time is up, stop writing. Read over what you wrote, jotting notes about anything promising. If nothing useful appears, try again after a break.
I'm interested to see what tarot cards have to say about free writing. Today's deck is the Connolly Tarot. Here are a couple of sample cards:
Images courtesy of Aeclectic Tarot
Today I drew the Three of Wands in answer to my request for more information about free writing. This card feels like it's telling me a partnership would make this idea work the best. Perhaps you and your critique partner can do free writing together. You could each work on ideas for your own manuscripts, or if you feel comfortable enough, you could both work on the same story; first one person's tale, then the other. Cooperation is the best route to go!