Following is a summery. Click on the headline to learn the stitch and read more.
16: Puncetto Valsesiano Stitch
Although this Italian stitch is mainly used for needle lace to decorate textile for the home or on folk costumes, I wanted to use it in embroidery.
It is simple and easy to learn, but attention must be paid on tension.
17: Q Stitch
An accidental stitch - many years ago I anchored a Lazy Daisy Stitch carelessly, and saw the letter Q staring back at me. Why not use it as a new stitch? I just had to introduce it on Sunday Stitch School.
It is simply a Detached Chain Stitch with the anchoring stitch askew.
18: Renaissance Stitch
Or should we call it Queen Stitch or Rococo Stitch or ....
This is an easy and enjoyable stitch which looks equally good as an individual stitch or when used for filling a larger area.

19: Satin Stitch Outline
Belonging to French Whitework, this stitch is great for making a solid thin line that stands up from the fabric.
Keeping the tension is the key, and I think the placement of the split in the Split Running Stitch is of importance, too, to avoid making such lumpy lines as you can see in the picture below.
20: Tete-de-boeuf Stitch
There are some questions about this stitch; how should it be worked and what should it be called.
One thing I know is that there is nothing 'beefy' about it. Instead it has a floral quality or could be used to illustrate cheering people or combined with another upside down stitch would maybe look like an ant...
Use SSS stitches 16 - 20 on a Sunbonnet Sue design. This time let Sue go to Sweden.
Change the thread to something more suitable for the Puncetto Valsesiano and Satin Stitch Outline, it you feel more comfortable with another type.
Try to complete it by next Friday. If not, you can have an extra week as the two stitches above are time consuming.