@Khin ***
This is the generic infographic that every consulate/embassy has on their website. It's not detailed enough to know what documents to submit without asking them. SOME embassies won't tell you what they need. They'll reply to emails with links to their website showing this very infographic.
For example, the Laos based consulates won't tell you they need 3 months worth of min 500K parked in your account. You'll find this out by wasting your time applying and getting rejected or lucky for us, by reading trip reports from applicants on here.
I booked an appointment for Vientiane but since this can't be canceled i'll simply ignore it because I'd need to wait another 2 months to apply given the funds in my account won't have been parked there for as long as Vientiane requires.
Therefore, I'll be going to another consulate in a different country where they aren't as strict on this, since I can't wait until November or December to apply in Vientiane (as much as I'd love to go there, but I go to Laos all the time on business and for pleasure anyway).