If your income was high enough to have a tax liability from taxable income after subtracting your standard or itemized deductions from your AGI, you may qualify for up to $2000 of non refundable Lifetime Learning Credit. Look at your tax return form 1040 and see if you had tax on line 11. If you did, the Lifetime Learning Credit could offset that tax and increase your refund or reduce your taxes owed. If you did not have tax on line 11, there is no need to amend your tax return because you would not get any credit.
If you want to amend your return, the amended return form 1040X is not estimated to be available until 2/14/19. If you are getting a refund from your original return, wait until you get it before starting the amended return. Do not change anything on your tax return until you start the amended return. An amended return must be printed, signed and mailed to the IRS. It can't be efiled.