How to make money for a trip?

How to make money for a trip?
Ok, so im 13, and i want to go to Coachella 2011. Its in California and i live in Texas. I come from a poor *ish* family. It would cost about $1300 for plane tickets, concert tickets, hotel,and food. I'm not sure how much renting a car is. My mom says i have to get all of the money if i want to go. I'm trying more chores and all and im concidering dog walking or babysitting. I know it sounds impossble but i need to do this in 80 days. Can someone help?