Register, then upload your photo to the site. Click Get Started, then New Layout. Set the canvas size. I would suggest 5" by 7" since it’s a greeting card layout you’re making.

Drag and drop your photo onto the canvas. You can resize it and rotate it. There are thousands of graphics to choose from that you can add to your card. You can also add your own text.

Save your layout. Go to My Layouts and click on the layout. You can download the layout in low-resolution for posting on the Web or for e-mailing to friends. You can click Share to have it sent to your friends.

Or, if you want to print your layout, click Purchase and buy a credit for one layout. That will allow you to download your layout in high resolution, which is what you’ll need to print it at home or have it printed by a photofinisher.
References :
http://www.cropmom.com