How do I make sure the paper is lined up in the Cricut for…?

I am trying to make invitations. I bought the "New Arrival" cartridge for my Cricut. I plan to cut out the cards with the machine and use the new cricut color markers to do the writing inside. How do I make sure the card is lined up correctly.

Has anyone done it before, who can share how they did it?

I know everything has to be lined up just right with these machines or you end up going of the paper.

Any help would be great.

I would cut some cheap paper in the same size of your invitations and run it through the machine and see where it prints. you need to make yourself a template or pattern that works and go from there with your invitations.