First of all, congratulations to you for doing a trial run .... rather than being disappointed later!
So many do not do so, and then are disappointed.
Did you heat set the inked area, by pressing (and holding) with an iron?
In doing a test wash, I would do it the same way as it will be washed in the future. Plus, rather than working with pieces of fabric, I would probably make a small sandwich with the same fabrics, batting, etc. and complete as a mini quilt. Something as simple as a Mug Rug will be fine.
If you plan to use different coloured pens, I would be sure to try all of them on the sample, just to check that they all performed in the same manner. Then as above, wash this mini quilt the same as the big one will be when the time comes.
Good Luck!!!!!!!!
Last edited by QuiltE; 08-03-2014 at 09:29 AM.