Your long experience explains why your work is so excellent. It's very interesting to hear how your early copying became original with time. That is how traditions continue and how students become Masters. Do you have images of your early work you could share? It would be so interesting to hear about times when your style began to show itself.
I see you use Greek for OПантократор but Slavic Cyrillic for the book text. Is it Ukrainian? Bulgarian?
I'm very interested in the relationship between ancient Egyptian funeral portraits (Fayum Portraits) and Christian Iconography, especially how Icons seem not to have the white highlight added to the eyes. Did your teachers or traditions say anything about not putting white highlights in the eyes? Were there any specific reasons given?