Goal of this post is to help and educate.
In time I will probably update this post with new photos and descriptions.
1) Blanket stitch, Buttonhole stitch and Whipstitch
All three stitches can be used for similar purposes. I use Whipstitch when layering motifs and stitching motif to the background.
Here is a photo of all 3 in layering example.
For stitching around the ornaments you can also use all 3 stitches. I personally use Buttonhole stitch which is a better version of the Blanket stitch.
Here is a photo showing the difference between those two stitches.
Check this short video on my IG https://www.instagram.com/p/CU9v6YMoFNW/
2) Back stitch, Half back stitch and Running stitch
First I have to say that I never use a running stitch. Why? You just can't get a great decorative effect with it. Instead I use "half back stitch". It's a version of the back stitch where you leave spaces between the stitches.
... to be continued
Please see my next post for some of my work using basic stitches