Also known as: damask stitch

Satin stitch has a very easy procedure. What is difficult in this stitch is to maintain the neatness, especially on the sides of the pattern that is being filled. So, very often, a satin stitch is outlined using one of the straight stitches like, the split stitch, the outline stitch, back stitch, chain stitch, or any other similar stitches of your choice.This helps in containing the satin stitch within the parameters of the pattern or motif easily.

Also, when doing satin stitch, we have to make sure the stitches are not pulled too tightly as it will distort the fabric. Keeping it too lose will sag the stitch. To avoid these two conditions, it will be advisable to use an embroidery ring to hold the fabric tight. When the fabric is taut, the satin stitch will be easier to do.

Another thing to keep in mind is not to keep this stitch too long. If your pattern happens to be big, you can divide it into smaller sections and each section can be filled with shorter satin stitches. Else, opt for another stitch from the satin stitch family which will help you to fill larger areas or patterns. These include the brick stitch, encroaching satin stitch, and long and short stitch.

I will be demonstrating over an area between two stitch lines, without any outline stitch.  

satin_stitch_1          satin_stitch_2
Fig 1: Bring the needle out through A and put it in through B. So, that makes a stitch which covers a small area between the stitch lines.   Fig 2: Now, bring the needle back through C, a point very close to A. Continue this action over the two stitch lines.
satin_stitch_3   Fig 3: Once finished, the area is filled as shown above. You will be spending as much thread on the reverse side as you do on the actual side of the fabric.