I can totally see your logic Holice ... the problem is that often we don't know what we do to make it work for us (or not work)!
For my ceramic problem ... here's what I did ... all of what I understood was correct ...
* pre-washed fabric ... hot washer and dryer, colour catcher in the wash
* assembled quilt using Best Press along the way
* final pressing and more Best Press
* dark ceramic pencil for marking
* FMQ
* spritzed the ceramic lines and gently rubbed with batting to get off
* didn't work, so was more vigorous
* didn't work ... now sitting til I decide what next!
