Making many banners

I need someone who can make a lot of banners (for presentation on websites) for different clients. For each client I need 4 different banners (4 different dimensions with each a different layout/color). You need to know how to work in Photoshop or a special banner making program. You must have a little fantasy to make the banners different from each other. For the rest it is no complicated work. Once you have some experience, it is just 'production-work', quick creating standard banners. This first project will be a trial for 1 day work. I want to know how much banners you can make each day, how they look like and what it will cost me each day. If this one-day trial job is done well, then there will come lots more. (1) So if you think you can do this job, then let me know how much you charge for working during a day long (8 hours) on this banner-making work. (2) Also let me know why I should choose you for this job (experience). When you are selected, then of course more details will come.