There is a widely used system to teach English pronunciation that uses symbols like "backwards C" (saw sound) and "A E together" (CAT sound) and "upside down V" (cut short U sound). Why not just give widely known sounds (doesn't everyone know SUN MOON CAT DOG?) and say, "TALK sounds like DOG in U.S. English"
This video is intended to be copied and distributed and used in schools. Go ahead and remake it in your language. Let's provide an alternative way to teach English pronunciation. thank you for listening.