The DeviantArt account where the images of Sweetie Belle's Soul forms were hosted has been deleted. As a result, the corresponding images in the chapter 119 of A Sweetie Dreamland are gone.
So if someone good enough at drawing could draw new ones for me, please...
The images are:
Unicorn Sweetie Belle Soul, with a body entirely made of her magic (so, green colored), flowing mane and tail, and glowing eyes.