After you file

I used SpringTax for state return and was able to print it and sent the Tax return today to my state using the amended 1040 NR along with W2 forms. I did not send 1040 with state amended. I have one concern and wondering whether I wrote "Amended" on the top of my 1040NR form which I sent to IRS federal return but wrote the explanation in 1040x so they should understand it. Will it create any issues if I missed "Amended"? Thanks.