I think your layout is beautiful but I find that my eye finds the background fabric a little busy (at least for my taste). Would you consider using a more subtle (plainer) background fabric? Or perhaps using a narrower, plain colour (maybe a black or purple) to frame it & then using that background fabric as a wider border. Love the stained glass pieces though. Either way it is going to be a lovely quilt. My taste is more to simpler layouts & that is not to say yours is "way out there" because it is not, just a bit busy IMHO.