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Round face is from the aspect of the Nikkud, meaning ‘dots’, (Hebrew vowels). The Nikkud is a set of dots and lines that bring specific lights into the vessel, which is the Hebrew letter (See charts and video below). Different letters with different Nikkud can be seen on a person’s face and it adds to the understanding of the person and his Tikkun.
There are very few Kabbalists at a high purity state that can see that. The energy in the world as it is now, blocks us from having such ability.
This is the Nikkud according to the Sefirot of the Tree of Life.
The letter Alef that is the seed for the entire existence is constructed from the Letter Yod, Vav, Vav and Yod. In the Video below you can learn about additional aspects of the Nikkud.