I would cut each piece into squares. You will probably have to add strips of plain fabric around the smaller pieces to make them the same size as middle piece. Then reassemble the 5 squares with additional (plain ) pieces placed in between the embroidered pieces to achieve your vision. When you quilt, you could embroider the blank filler squares in a similar design in ivory color to compliment your colored squares, yet not draw attention from them. You have chosen lovely designs and fabric. Let’s see your finished work.