Good post! They are always of great help! I invite you to visit a written tutorial that I made today about creating a Muck Up in Photoshop for business cards, but it is in Spanish! I hope you can visit it. Regards!
https://steemit.com/tutorial/@corinadiaz/mock-up-or-presenta-tus-trabajos-de-diseno-grafico-como-un-verdadero-profesional