Remove the background from 3 images

I have three images and I need the background removed. The subject is wearing white and the background is white so special care will need to be taken to get the job done right. To demonstrate that you can do the job, open file [login to view URL] and please remove a portion of the background from just the area around the subject's head and near her white jacket then post a link for me to review. This will help me see the quality of your work. For the purpose of demonstrating your skills I am not asking you to remove the background from the whole image as I know that will take some time. I just need to see a good sample of your work for a subject on a white background with white clothing. If you already have an example of white on white you would like to show me you can use that example instead. Once you have been awarded the project you will need to remove the background from the whole image. I need this project completed within the next 2 hours so please do not bid if you cannot get started right away and can not have it completed within the next 2 hours.