You will need:
-A passport tht is valid 3 months after you go back to Thailand.
- Signed application.
- Photo 35x45 mm
- health insurance contract ( minimum 35 000 euro)
-Recorded purpose of trip.
- And i have to send you money, that they can see you have 64 Euros for every day that you stay here. Or i have to show them my bank account, that i have money enough.