I just wore what i would normally wear for an interview.
Since you care about what you are wearing i assume you will have a camera on. Check where you plan on positioning the camera. Will it have glare from a window? Is your face visible? Is there anything you want to hide from camera view?
Make sure the software you are using for the meeting (teams, zoom etc..) is setup and ready. If possible do a sound and mic check just before the interview. You don't want to find the windows or whatever has changed your settings from the previous night.
Have everything you will need at arms reach.
I have a multi monitor setup so i had the job role and my CV opened up on my screen for reference purposes.
Look at the camera, so it gives the impression that you are paying attention.
I have found that unless they are strict with time keeping these can sometimes go on for slightly longer than normal.
To cover anything i may have missed treat it like your are actually on location. So silent anything that can cause distractions, make sure the room is quiet, etc..