There are a few things you can look for when adjusting a saw blade. The first is the teeth. They should all be the same height and pointing in the same direction. If they're not, the blade won't cut evenly.
Another thing to look for is the gullets. These are the spaces between the teeth, and they should be clean and free of debris. If they're clogged, the blade won't cut as well.
Finally, you should check the angle of the blade. It should be perpendicular to the table. If it's not, the blade won't cut as cleanly.
With these things in mind, you should be able to adjust your saw blade properly.