So even though I already filled my taxes I just have to mail this form in and im good?

So I printed the home heating credit forms off. At the top of the paper it asks if I'm amending my taxes? Do i have to amend them to send in this form? I am so ...

So I filed my taxes before my home heating form came:( is there anyway I can print the form off and mail it in? Or am I screwed now? @DaveF1006