Don't remind them of your past, lol. ;-) Rather boost your chances by filing some solid bugs for other games you already own. Something you'll be able to reference in your application.
And seriously, devs don't need your $20 or $50, they need someone who will put 2000 hours into testing the game and return with a big pile of savegames and screenshots documenting all kinds of unthinkable bugs they can fix for the release so it's polished beyond expectations. If you just want early access, you'll most likely give up very quickly, when you realize how buggy and unfinished a game you got given to work with.
And well, it'll be 100000000 people applying, beta-eat-beta, so best of luck to all of us. Chances of getting in as big as winning a lottery. ;-)