Marcson15,
Not being a lawyer, my advice is likely worth what you paid for it. But as far as your future in aviation, your event is small stuff and more of an administrative oversight (which you promptly corrected) than a "crime" in practical terms.
Having followed this pilot application process stuff for a while, the theme regarding these kinds of mistakes seems to be: admit the error was yours and yours alone...and not the fault of the "system". Never blame someone else.
Take full responsibility and be ready to explain what it taught you and how it made you a better person, and therefore a better employee, for the experience. Maybe you're now more attentive to details and the small print than you were before ?
It's not like you held up a liquor store and shot the clerk !