Hello,
I'm pretty new as working as freelancer, but I have lots of experience of using flex as I have been working with it for the last 2-3 years together with blazeds and java for the server side.
I'm a very hard working guy.
From your description I'm not sure about the trigger actions for the approve or disapprove the task, are the webservices already in place(that will be triggered by the click) and you need only to add those buttons?
Hope that you hire me.
Best Regards,
Gil Soares.