It important to remember what a headshot if for.
It’s for a performer to introduce him/herself to a casting - it should be a simple accurate reproduction of what you actually look like as you turn up for the audition.
It should be clean and simple, but guidelines can vary according to it’s intended audience.
Many photographers prefer to avoid the studio and go outside.
Today headshots are normally colour - but again it depends where they are intended to be viewed.
They should have little to no skin smoothing - unless that is how you will look when they meet you.
Headshot.site is in answer to the needs of those starting out who are on a tight budget and still building up their confidence.
It’s a workmanlike solution to getting them taken without to much pain.
Many I work with need a while to settle in and make their headshots “natural” - and time and advice is given for this.
Established and advanced industry performers often will have a set style criteria laid down by their agent.
Although called headshot site this section includes all kinds of self promotion work including the new “moving” headshot - the self film - a short audition style tape for a casting, audition tapes video’s and early showreels.
Everything however is pitched at the simple approach and that keeps costs down.
Advanced actors showreels for example are often major professional mini epics best produced by video specialists [many agents offer use of studio and editing space for this purpose, or have a set corporate procedure in presentation.