Rachel,
I have a friend who did a fused quilt with top stitching around each bouquet of flowers using the aurifil thread. It too was an Edyta Sitar BOM quilt and it turned out beautifully. She changed the background color for the bouguets to blue
and did QAYG with the top stitching. She used smaller stitches and sewed about 1/8 in from the edge.
Hope this helps