There is an interesting online course with top Kaggle competitors, that you might want to check in order to hone your data science competition skills:
Those who speak French might also enjoy this 45 minute video by a seasoned data science competitor, Pierre Courtiol: https://www.college-de-france.fr/site/stephane-mallat/seminar-2018-02-21-11h15.htm.
Good luck to all!