✔ 最佳答案
Your visa is never "okay" at all.
When you receives the "yellow" sheet, this indicates that further documentation is required for your application.
This also indicates a high chance of denial as you were unable to demonstrate your exact purpose of visit during last interview.
The only thing you can do is waiting. Once the process is completed, you will be notified for the decision. If approved, you will be asked to provide your passport and postage fee.