I'm with Jennifer on many points. If this one is going to a child, keep the snowman fabric and don't cut it in half. Kids want to see whole things (animals, people, snowmen, etc) and are often disturbed by seeing things cut off. Granted , the print is busy, but kids like busy.
My thought is to sash with red about an inch finished around each . The frame will draw the eye in to the embroidered pictures (red always draws attention).
You're a patient dear for undoing all those tiny stitches and giving this quilt a new and improved design.