You can get Vietnam Visa on Approval by following these below steps :-

• Fill out a application form online ( you will need to know your arrival date and the name of the airport at which you will arrive )
• Pay the visa servicing fee online.
• Within two business days, you will get an email with your official Vietnam visa Approval Letter issued by the Vietnam Immigration Department.
• Print the Approval Letter and prepare two (4cm x 6cm) photos of yourself according to noted requirements.
• Bring the printed Approval Letter, photos, and the government Stamping Fee ( along with your passport and any other required documents ) with you on your trip to Vietnam.
• When you arrive at your destination airport in Vietnam, show the Approval Letter and photos at the Immigration office.
• Show your Visa Approval Letter with stamping fees and entry-exit form at immigration office. There you get your Visa.