Here are my tees, sans Mickey head:
They turned out better than I had thought. DS's shirt turned out the best - the first one - and DD's - the second one - there was a lot of brown where the excess dyes hit the yellow. Due to time constraints (I'm packing for vacation as I type this message!) I let them sit for 20 hours before washing & rinsing when the instructions called for 24 hours. So, it won't really matter too much if you need to cut the dying time a bit short.
The colors are a
lot more vibrant in person.
I won't bind the next set to tightly. That will help distribute the dyes in the center. That should help keep the colors from blending together as much. DD's has a lot of brown in it, which I'm not thrilled with, but it'll work. I bet she won't even notice!
My only tip from this is that if you want purple in addition to the red, blue & green that comes with the kits, purchase an extra kit and mix some to use separately. I tried for purple just by mixing on the shirts, and it turned out almost brown.
I'll try to post photos of the finish shirts with the transfers on them if I have time. I'm still trying to keep them a secret from the kids!