If one fabric is obviously flimsier than the rest of them, it will probably wear out first - and then there will be frayed or shredded areas.
It won't matter if the piece was large or small.
I've seen quilts where just one or two of the fabrics disintegrated - and the rest were still more or less intact.
When possible, I like to have all the fabrics in a top be about the same for quality because then I think all the fabrics will wear out at approximately the same rate.
There is no law that says one has to do this - just my personal preference.
For art projects that are for visual enjoyment - anything goes!
PS - some fabrics that seem " thin" are tightly woven and might outlast a coarsely woven bulkier fabric.
Last edited by bearisgray; 03-06-2015 at 07:33 AM.