How do I amend my 2022 Federal Tax form to add a missed capital expense that I think I can claim?

[pkrasn]

I just realized that I could have added a capital expense to my 2022 taxes.  I don't know how to get back in to the 2022 Federal tax form to amend it.  I had a main sewer drain that broke and had to be replaced (along with tearing up my driveway that was on top of the broken pipe. The cost was over $7,000 and I am still paying it off.  I have the cashier's checks to show how much I paid.  
I understand the difference between a capital improvement and a capital expense and because this sewer drain in necessary to my home's proper functioning I feel I can write some or all of it off.  I just wished I had thought of it to do it last year.

[CatinaT1]

See this TurboTax FAQ for help with amending.