Step 1: Push all the plastic slugs out of the Harness
Push all the plastic slugs out of the Harness. You can pop them out with your fingernails however if your fingernails are just too dainty you can remove them with your mini screwdriver.
Step 2: Remove the paper coating
This picture makes it look pretty easy and sometimes pictures are deceiving. Getting the first corner to lift off the plastic can be challenging. The classic way to get the paper to lift off the plastic is to use your fingernail. If you use your mini screwdriver you made scratch the plastic but if you get desperate this may do the trick. If you're lucky you can get the paper to peel off in one big clean sheet. If you're not lucky you'll need to remove it strip by strip as each piece tears off clawing it like a feral cat. You may try scraping it with the plastic 9 V battery holder. Being that the holder is also made of plastic so it is less likely to scratch. one more thing, I hope you're lucky.
Step 3: Attach the Arduino with plastic rivets
Attach the Arduino with plastic rivets. Do not try and use the little metal screws, save them for later. If you need help installing the plastic rivets see my handy little photos. Take a look at the before and after.
Step 4: Add the rubber feet
The rubber feet are added in a two-step process. The first step is put the rubber feet in the holes of the plastic. The second step is to push the plastic posts into the rubber feet so that they expand and are retained in the plastic. The third step is to ponder how nifty these little contraptions are.
Step 5: Add the 9v battery holder
This part involves tools. With tools you should be careful (don't lose them). See the pictures for complete instructions.