Excellent. Thanks. I learned Cyrillic script and iv'e ordered a Russian keyboard for my computer. Iv'e learned quite a few words and hope to learn this beautiful language. Greetings from England.
An absolute beginner will not understand what you are saying. You use a language people don't know to explain the language people want to learn. What do you want to achieve? Highlighting the vowel help nothing in explaining the grammar and usage. The voice is inconsistent. Sometime too loud sometime too silent to be heard.
Many videos are not for students but for teachers. And a teacher can always mute my voice and explain the structure by using their own voice in a native language of students. 😀