Don’t change your clothes, don't fix your hair.
Just take the picture.
Post the picture with no editing.
Post these instructions with your picture.
In background: monitor for useless work computer running Windows 95, personal laptop open to employee account info so I can find my V number and get reimbursed for plane tickets on my travel expense worksheet, aforementioned travel expense worksheet, picture of my brother and his girlfriend, tp for perpetually congested face. Not visible: stack of plant specimens needing ID check and label transcription (behind my head).