I just did a Scottie Baby Quilt for my friend and she was so thrilled with what I'd done, that really made my day more then the money she paid me. She had a white heavy flannel for the backing, I stitched in the ditch around each dogs, their collars and around the borders. I did circles in the back ground of each block. The back is what she was so excited about as it too looked as good as the front. If I did these horses I would do the same and I think a few FH stitching on their mains too .... not so sure that's how you'd spell that? I'm not a horse person, I leave that all up to my sister, if she could have I think she would have married a horse ;c} , her ridding days are over but her love for horses will go on forever.
Hope I help a little?