This stitch is used to fill in simple patterns like leaves. It uses the same technique as the cretan stitch with each stitch close to each other to fill in gaps.

If you know the cretan stitch, it will be an advantage.

I will work between four stitch lines to demonstrate this stitch. Each stitch line is named A, B, C, D.

closed_cretan_stitch_1         closed_cretan_stitch_2
Fig 1: Bring your needle out from A, taking it in through D and then out again through C. All these stitch points lie in a straight line. Keep the needle above the thread, as shown.   Fig 2: Now, take the needle in through A and out through B, keeping the needle above the thread. A and B would be in a straight line.
closed_cretan_stitch_3   closed_cretan_stitch_4
Fig 3: Keep up with this process of taking the needle in through the outer stitch lines and back out through the inner stitch lines, keeping each stitch point adjacent to each other.     Fig 4: The final result wil be as shown. You can see a braided effect running through the middle of the entire filling.