You can actually make a living constructing and making handmade cards at home. I did this by servicing over 2,000 stores for about 15 years making cards this way. Of course, after awhile I paid other people to make the cards.
Here is an example of how I set up my manufacturing process for my card business.
Step 1: Gather Materials
Gather all materials you need for your card. This task requires I have glue, cardback, envelope, cello bag, card text square, and image square. I will assemble them all and make a card.