I have a system that has worked out pretty well over the years. At the start of the year they tell you what the key things are you need to do, and possibly some improvement areas also. Once a month I update a document I keep that tracks my progress on those things as well as any new initiatives. I figure out how to come up with metrics if at all possible so there is no guesswork involved.
When review time comes I pull up the document and summarize the things I did, report the metrics, point out new initiatives, etc. I arrange it in the format that matches the performance review form, by section. I also make a point to include deficiencies where things didn't go as hoped. Then I give it to my boss about a month before they have to submit the review forms.
I've had six different bosses since I started that system, and all six essentially plagiarized my document at a 80-90% level to create "their" review of my work.
Results:
75% of the time rated exceeds expectations
10% rated outstanding
15% rated meets expectations
Takes about one hour a month.
Current pay is 160% of the max for my position. Not a typo.
Make it easy for your boss to prepare the review, you will be rewarded if you have simply done the things they said at the start of the year you should be doing and on top of that you show some initiative of your own, and aren't afraid to document your own shortcomings.
By the time the year is over, both you and your boss have forgotten many of the good things you did and the boss must review you in generalities rather than specifics. That doesn't help you stand out from the crowd.
There's only so much funding for raises to go around. You need to give your boss a reason to give you more than the average.