I would stitch in the ditch around the robot (?) and then you could try to crosshatch. That is when you stitch diagonal lines. Mark your first line diagonally from corner to corner and then mark additional line (can be any width between the lines) on either side. Stop stitching before the robot and continue on the other side. It should not take you very long to do. Use a blue or purple be gone found at your LQS or JAF.