Ok ... first you have to WAIT to amend that return until you get your original refund ... what you just changed is not being sent to the IRS. At that time the 1040X must be printed, signed & mailed with any payment you owe back to the IRS.
Look at the form 1040X …
Column A should have the figures from the original return, Column C the corrected figures and Column B the differences between the other 2 which needs an explanation on page 2 of the form 1040X.
If you completed it correctly you will see an entry on either line 16 OR 18:
On line 16 should be the amount you paid with your original return.
On line 18 should be the amount of your original refund you received.
Then you will see your extra refund on line 22 OR the new balance due you need to pay on line 20.