All mockups are from freepik.com

https://www.freepik.com/free-psd/christmas-holiday-greeting-design-mockup_3384659.htm#query=christmas%20card%20mockups&position=38&from_view=search&track=ais&uuid=8264718c-2689-4df2-94ce-d78c0ad08249

https://www.freepik.com/free-psd/christmas-holiday-greeting-design-mockup_3367007.htm#query=christmas%20card%20mockups&position=0&from_view=search&track=ais&uuid=8264718c-2689-4df2-94ce-d78c0ad08249

https://www.freepik.com/free-psd/christmas-wreath-with-design-space_3383853.htm#query=christmas%20card%20mockups&position=2&from_view=search&track=ais&uuid=8264718c-2689-4df2-94ce-d78c0ad08249

https://www.freepik.com/free-psd/christmas-holiday-greeting-design-mockup_3383861.htm#query=christmas%20card%20mockups&position=26&from_view=search&track=ais&uuid=8264718c-2689-4df2-94ce-d78c0ad08249