Your quilt is adorable.
I like the suggestion of using your embroidery in a block. Some blocks known as "signature" blocks will have a more intricate block design w/ a center portion left blank for people to sign. You might be able to put your embroidery designs in those areas or modify the block to fit your embroidery. Not sure which is easier.
I think it would be interesting to see the embroidery around the edges of the quilt too. Not sure how involved that would be..always more work to be done and not enough time.
Quilterscache has several "signature" blocks of various sizes. The website usually has one quilt displayed so you can get an idea of what the quilt will look like.
HTH,
Julie