Well since I lost my orginal practice piece I whipped up another one this evening.
Cochineal dyed cotton fabric, machine stitched, wool quilt batting, aurifil threads.

I couched down more sisal to pratice some stitches with, this "x" shape I bobbin stitched using aurifil wool thread. Above view is the back side of the sample that was facing upwards when stitching.

Top side after bobbin stitching, the aurifil wool thread doesn't like to feed through the top on my 6500S so I bobbin stitch with it instead.

I've couched down more sisal since this shot was taken, now I will experiment with hand stitching over the sisal and then machine stitching over the hand stitching to see which effect I prefer. This all in anticipation of finishing Bjorkboda.