Beautiful quilts, but #3 didn't come through. Binding on the first...I would go with the dark blue that is at the base of the flowers.
Could you outline quilt the flowers, then small meander quilt in the black. A corner motif would look great in those large light colored areas. Could you start that design in the colored framing. That leaves the light smaller rectangles to quilt with a loose filler stitch. But what do I know...I haven't gotten too far beyond meandering.
Wish I could see the last...as I love quilts with smaller pieces.