Also known as : Fly stitch filling

This stitch is done using rows of horizontal fly stitches in a particular symmetry to fill an area. Visually, it is similar to the trellis stitch.

You need to know fly stitch to be able to continue with this tutorial. Knowing closed fly stitch will be advantage. I will be working between a series of horizontal parallel stitch lines.

 crossed_fly_stitch_filling_1         crossed_fly_stitch_filling_2
Fig 1: Make a horizontal row of fly stitch as shown. The fly stitch should have a very short tail or anchor, so as to give it a V shape. You can refer the closed fly stitch tutorial for this.   Fig 2: Now, start the next horizontal row of fly stitch below the previous one. This row would look like a mirror image of the first one. The anchors of the fly stitches in the second row would fall over the anchors of the ones on the first row.
They look like crosses pinned down in the middle.
 crossed_fly_stitch_filling_3   Fig 3: Continue making rows of fly stitches to fill up the entire area to be covered. The illustration shows a sample of four rows. Each row would mirror the previous row.