I do FMQ but by the time I get to the borders, it seems I kind of "run out of steam". So if I have a floral or patterned border like yours are, I like to just out line some of the designs. Doesn't take a lot of planning or marking and it doesn't have to be exact since the stitching won't show much on the fabric design. On yours you could use an off white or about any neutral color thread.