A standard deal sheet in NYC usually includes the sale terms (price, % down, contingencies, etc.), information about the unit and building (flip tax, monthly taxes, etc.) and the contact details of buyer/seller attorney, both brokers and the managing agent.
Please note that the listing agent usually completes the deal sheet and sends it around to the attorneys as well as both brokers. The deal sheet itself is mostly ceremonial and simply serves the purpose of connecting everyone on a deal and reminding all parties of the terms of the proposed transaction. The deal sheet itself is not contractually binding in any way.
If you do not want to make a deal sheet from scratch, you can easily find a template online (Hauseit has one). Simply fill out the template with the relevant details of your specific deal.