I need help please this is really important to me!!!!!!!!?

Ok, so I am 12 years old and I LOVE Justin Bieber....(no one comment on him rudely.) And I REALLY want these VIP tickets that cost $1800, but my dad is refusing to get them for me. Any ideas on how to convince him??? Or any ideas on how to make half of the money or more???? Thanks sooooo much!!!!!