It depends on how much your income was, and what kind of income it was - earned vs unearned. Also if there were any deductions or credits you were not able to take because you indicated you could be claimed on someone else's return. You can start an amended return, and make that change and see if it reduces the amount of your tax. If it does, finish the amended return and file it. If not, delete the amended return. To file an Amended return:
https://ttlc.intuit.com/replies/7276605