What a beautiful quilt! Feathered stars are on my bucket list, as is the Ohio star. Who are the patterns by? Are they the star of Chamblie (spelling?) stars in the center? As others have said, I would wait and wash after quilted with the Synthopol. That being said, I once washed a quilt top because our dog had fleas and I was fanatical about cleaning everything. It did unravel a little but was salvageable. I had prewashed, though, with Retayne in hot water, although I don't think that would have affected the unraveling unless the Hot water tightened the weave.