Choose the type of Card you want and then purchase a Credit for it with a Credit Card. (This site uses Stripe for Credit Card Payments.)
Generate the a new Generation 1 Cattle Card by Navigating to your Ranch Office. Click on the "Spend" button next to the Credits.
Generate the New Custom Card by Clicking the "Generate" button next to the Credit you want to use.
After the Cattle Card breeding is complete, you can Mint it into an NFT by Navigating to the Ranch Office, scrolling down and then clicking the "Mint Now" button. (Make sure you connect a Web3 wallet on the Polygon Network for Minting to work.)
Finally, you can import the unique Custom NFT into your wallet! You are finished!