Congratulations on the approval of your application. Kindly be informed that you required to liaise with the Malaysian Embassy in Bangladesh directly on the steps to apply for the SEV and they will be able to guide you on the required documents.
You cant apply directly for SEV at Malaysian Embassy. You should communicate with Malaysian Embassy authorised agency. You have to provide 2 copies photograph, EVAL passport as well ass fee around 6000 to 6500bdt. After 1 week you will get back your passport and be ready fly.