I tried this and the mixture left powder on the fabric and when I printed on it the ink didn't stick to the powder and it all washed out anyway so if you used it you couldn't wash it. I found out a better way from a person on this board. If you fix your fabric to the freezer paper and print on it then after it is dry, I let it dry 24 hours, then take a diluted mixture of water soluble permanent fabric glue and dab it on the picture. I used decoupage glue. Let it dry again at least 24 hours. Then either set it if the directions on the glue says to or just use it as you wish. I do recommend testing with the different glues to make sure they work like you want it to. Also experiment on the amount of water to glue you need to make it permanent.
I think if you do a search on this board for printing on fabric her directions should show up. I can't remember her name or I would post it here. Sorry.
Lynda