How can i apply HK visa from myanmar?

May I know what your purpose is to visit HK? If you go there for sightseeing purpose, you should apply for a tourist entry permit. The first step is to prepare the relevant materials containing the application form, a passport-style photo, copy of your passport, hotel reservation, flight itinerary, your financial support proof and your travel plan to HK. And then hand in your application to the embassy of PRC to apply for it.