Ok, to work a God's Eye Stitch you need to first form your cross. Bring your needle up at 1, down at 2, up at 3 and down at 4.
Begin weaving the four arms of the cross with a spiral of backstitches. Bring your needle up at 1 to the left of the top of the cross you just made. Insert the needle back over the top of the vertical stitch and under the horizontal stitch as shown below. Do not pierce the fabric. Continue working backstitches over the four arms of the cross until the top part is covered. Try working this stitch in wool threads to give a really textured effect.