Click Submissions, pick your game and categorie(s) from the drop down menu, enter your scores, click submit, then you'll be taken to a screen where you confirm all the info on your stats is correct, and there'll be a spot to add a comment to your stats. Link the video in the comment, and it'll automatically be added to the database once you confirm that your stats are correct. Make sure you look over the rules for the game you're submitting to, if you haven't already, to make sure your runs fall within the competition rules. Hope this helps! Have fun competing!