I also did a tshirt quilt...sorry no pictures I forgot...and delivered to her yesterday. She is a newbie and wanted the back to be soft - so she bought a knit fabric...it was a lot like working with minky. WOW did it ever stretch! I wasn't sure which way to put the most stretch - cross wise or length wise. I ended up putting it length wise and it stretched a good 8 to 10 inches. Not sure how it will wash up...but I don't think I will ever quilt another one with a knit backing!
I'm now working on Roxanne's stars...I'm hoping to finish stuff before the Paducah show!