There are a lot of good comments and tips in this thread for you to apply, not least of which is the one from dws about being fully aware of the client's needs and specifications at all times.

While it's a bit late for your current job, I'd like to add that all these things should be part of your modus operandi at all times, from before you've got the job (if you don't clearly understand the client you may well not get the work, or you may get it not realizing what you're in for), right through to completion. It is good that you've set aside time at the end, but really this quality control must be incorporated all along.

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I'd like to be able to assign to an luser