Only professionals can help you with your visa application. Visa application differs and it depends, each country has a different application method. Visa applications include tourist, visit, study, work, spouse, volunteer, humanitarian, family visa, etc.  Therefore, you have to know the category of visa you are applying for. When applying for a visa, you must prepare proper documentation and get ready for your interview, while some countries require documentation submission. Medical tests are involved in some visa applications, particularly study applications. Applicants are expected to undergo biometrics. Visa approval is strictly consular discretion.