Trouble with getting a clean Face image
Ok so I am trying to join the Social Media trend and make a decent Face image to use as my avatar and what not. I am however running into some issues.
This image is the source image the one i am trying to use to get the face image. I looked around for tools to help me do this and the only way I found to do it was to open the image in Gimp and then use the Multi-point selection tool to try and outline my face then cut the image from the background and past it onto a new layer on top of a layer with a transparent background.
This resulted in this image 
The image as you can see if technicaly a face image but it is no where near as cleanly done as I want. If you look on http://www.av-j.com/fedoraplanet you will see examples of people with clean faces ones that do not have jagged edges and do not look like an amateur edited them such as myself.
So what I ask you guys is, Do you know of a plug-in for the Gimp or some site that can aid me in doing this more cleanly? I need the file it generates to be able to be safely re-sized with minimal degradation to the image quality (not a super good quality to begin with )
Digital photography is not one of my strong points here so anything suggested should be clear and to the point and hopefully something i can follow easy enough.