That paper should have come with your shocks. It shows what is new (circle) and what is from your old shocks (square).
For instance :
1 is the white plastic piece that came with the new shocks -- its to keep dust out of the shaft
2 is the bump stops from your old shocks
3 is the metal hat from your old shocks -- it also cites that you need to drill it out on the right (the star). I think it says 10mm or 12mm -- hard to read on your photo.
the plastic dust goes over the hat once its assembled

Note that the paper shows everything together -- the car itself is in middle of that -- I think around #5. I'm not 100% sure though, but it was pretty intuitive because it is setup like the OEM shocks you removed. I only did one shock at a time, and I disassembled and re-assembled everything the same way.