Here is an example of how I set up my manufacturing process for my card business.
Step 1: Gather Materials
Step 2: Layout multiple cards
Overlap the cards in areas that are not going to be glued. You can get more cards on the table that way.
Step 3: Glue
Since the glue takes awhile to dry, I know I will have time to lay down the pieces before it dries.
Partially dried glue is ideal, because when you place something on it, it has more "stick" to it than fresh runny glue. Runny glue tends to let things slide around too much.
Step 4: Glue in This Order
Drawing a circle of glue is a whole lot faster than a square shape, and it sticks just the same. Note also the card has a pre-printed black frame, to help the cardmaker guide where the glue should be placed.
Step 5: Do another layer
Don't remove anything. Put a second stack on top. I can make this stack go about 10 levels high.
Step 6: Assemble your envelope and bag
Put the cards and envelopes in locations on your work table so that you never cross one arm over another. This is very inefficient.Also, if you are throwing away paper scraps every minute, make sure the garbage can is on the same side of the table as the hand that is throwing the scrap away.
Step 7: Arrange materials in easy locations
Step 8: Stocking finished cards
Group cards into 6's or 12 when putting them in the box, (that's the way card are usually sold). You can do this by rotating every 6 cards.
Don't store cards in damp areas. Dampness can cause the envelopes flaps to stick to themselves. Also, don't pack cards too tight if you use cellophane. It has a tendency to stick to itself since it is biodegradable. Bags need to "breath."