You need to list this contribution on form 8283. Attached are links to the form and instructions:
https://www.irs.gov/pub/irs-pdf/i8283.pdf
https://www.irs.gov/pub/irs-pdf/f8283.pdf
You also need to make sure you have a receipt from the charity and the statement must indicate whether or not you received any goods or services in receipt of your contribution. This statement is critical or your contribution will be denied if audited.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
