Headshots for a friend (help)

[Bukka]

I've recently been asked to do some headshots for a friend that they can use for their acting portfolio.
I'm not sure if there is some kind of formal headshot style that is required or what.
Is there anything I need to be aware of?
Any help/examples would be great.

these are a few examples of my shooting style to give you guys an idea of how I shoot, and to help me build off this.

http://farm3.static.flickr.com/2237/2096152978_914db43f02_o.jpg

http://i8.photobucket.com/albums/a9/scarface1980/IMG_2398.jpg

http://farm4.static.flickr.com/3290/2323321072_d972a80648_o.jpg

Thanks in advance :)

[poloman]

Here is a start....
http://photography-on-the.net/forum/showthread.php?t=446259&highlight=head+shot+style

You will find a lot of reading by doing a search here on head shots...... :)

[Bukka]

all these views, and nothin else?
:(
i'll keep searchin on my own.

[divinemethod]

I am also looking around for this... found some links on google.

http://lecatr.people.wm.edu/headshots.html