i also suggest not doing your own production. in my experience, there simply is not enough of a margin to be made (if at all these days) in doing production and it is a waste of a photographers time to attempt to suck 10-15% out of a budget. you are a photographer. be a photographer. if you are making 50K fees on an ad job and the production is say another 50K, it is simply not worth trying to make another 5K out of the production. as you are holding a lot of overhead which if it goes wrong and/or over budget, you and your business will be held responsible. not to mention the headache. production is for producers.
A Photo Editor 2010