There are some general tips for those that want to do it as well:
Do the tutorial. Don’t skip it, if you skipped it, you can turn it back on. I skipped tutorial at start, been stuck on less than 50% accuracy for a week, then I did the tutorial and skyrocketed in accuracy. You won’t even know what you have to do without doing the tutorial.
Don’t put false positives, it will have a harmful effect on data (it may not always harm you, but it harms the project). Some samples will reduce your accuracy for that too. If you don’t see any sign of planet, click “No Transits”.
After you get a hang of Project Discovery, start doing it casually when you can spare some of your attention, like while travelling, mining, trading or ratting.
Don’t submit the samples too fast even if you’re fast. It won’t save your time. Project Discovery has a built-in anti-botting mechanism that won’t let you do it for several seconds if you submit the samples too fast. Take a few seconds to analyze each sample.
If you’ve done the tutorial but still don’t know what to do, check this guide by Rexxar Santaro. This will definitely help and improve your accuracy and give far more information about the Project Discovery than my general tips.