Forgot 1099-INt $700

I forgot a 1099-INT for a bank account that had $700 interest. I just submitted my taxes yesterday and they just were accepted.
Do I need to wait for them to process and receive my first payment before I amend? 
how does the amendment and payment process work ? On the irs website, if I owe money on the amendment, would I just choose “amended return” for the payment type 
Next year when I file would I use the agi and information off the amended return?