You have already asked this question once and received an answer (see below). You need to print out your return and follow the simple instructions.
https://www.irs.gov/instructions/i1040gi#idm139844930784656
If you are a fiscal year filer using a tax year other than January 1 through December 31, 2018, write "Tax Year" and the beginning and ending months of your fiscal year in the top margin of page 1 of Form 1040.