I could always go back over the lines with marker to darken them a bit.
I made another sample using just black fabric marker and Tsukineko inks. This piece remained crisp and clear.
When the ladies arrived, they saw this hand that I had doodled in one of my journals, so we decided to challenge ourselves to each designing our own hand doodle. From there, we can choose to color, add photo transfers, text, or whatever. This could be an interesting challenge!
Before the meeting was over, most of us had at least doodled inside the outlines of our hand on fabric. Mine looks very similar to my paper version. I probably could have just printed it out from my computer onto fabric.
It will be interesting to see what the finished art quilts that begin with our hands. Several members were on vacation, so I hope they will also join in the challenge.