11: sometimes what you think is perfect is not what the person requesting a job looks perfect, so, create a folder, with that persons name and project
save each version as a seperate filename, eg banner1, banner2 etc
sometimes someone will say, "thinking about it i actually prefer the previous version you did now"
so at least you can easily load it back it
(ive had stuff ive worked on that even after 15+ changes, they wanted one of the 1st, imagine doing so many changes on a file, if they want that and you dont have an option to revert back!!)