You can try John Robert Powers. They offer courses on dining etiquette, styling, and how to enhance one's image and self-confidence. Here's their site: http://www.johnrobertpowers.ph/courses/personality-development-program
You can also check out Etiquette de Manille. They offer courses on dining etiquette, posture, confidence-building, self-presentation etc. Here's a link to some of their workshops: https://pauliantoine.com/workshops/
Magbasa pa