Should I be worried about missing documents in my visa application in Hanoi?

The user is concerned about missing documents in their visa application submitted in Hanoi, specifically the employer's official company registration certificate and LLC papers. They have submitted an employment contract, an attestation letter about their income from the USA, and their resume, but there is no portfolio provided since they work in consulting. They seek advice on whether they should panic about the missing documents and if it's possible to add them after submission.