First off, your quilt is beautiful. That being said, it is a modern pattern and in my honest opinion I think the traditional appliqué flowers like you have shown aren't the right ones. I do think you could add something to the borders, but I think it should be something modern in design. Using whatever leftover hexagon pieces you have to make a design in the border would add another interesting element to the quilt and not seem out of place. JMHO