Here’s an invitation card mock up created with CorelDraw in about 30 minutes. See steps below:
Draw the frame for the mock up
Get background images from Google or other sites.
Create a rectangle and place the images in container as done below. Tip: I changed the top image to grey scale and applied perspective to the bottom image for the effects seen below
Place the invitation card mock up and create a shadow, see steps here.
Place your design on the mock up using the ‘Envelop tool’