That's going to be great!! The muslin makes the scrappies look like beautiful jewels.
I hope you don't mind me asking for tips on how to do the scrappy corners. I use this method to make snowball blocks. No matter how careful I am to mark the diagonal line and sew on it, the corner pieces are sometimes' off '--a bit too small or a bit too big.. Do you have any tricks for making sure they are accurate? Hope I explained it clearly enough.
ranger