This one is online print.

if you have done online, depends on your software you it will gude you through to amend.

If you are using TaxACt click on JUMP to FORMS and TOPICS. turo-tax click amend

Click 1040X ( for taxact)

Once you see the firm 1040x , Somewhere it shows three ways to amend.
Original amount
Net change
Correct
three column are there .

Before you add the new form I guess it will ask to click on three choices on that 1040 X click the first something about the original.
It will fill the 1040 X automatically on the original amout , net change and correct , as you add the new information,  no need to fill other than the explanations.

Add your new information.

Explanations:

Still you have to put the reason for amend line by line.
line 7. missed the w-2 income by $
line 23 for new total income
line 38 new AGI
Line 43 - new taxalbe income
line 44 - New tax liablilty

if you do not have enough line just put line 7 , 38,43 and 44.

If you owe money, attach the check with it and send it to your IRS office.

I think that is all.

I think your software will charge you again for th 1040 x print.

I can not help on your state , until I know which one is it.