Hold a tealight up against the top of the first orange, and use the Exacto knife to cut the outline of the tealight into the orange. Then use your paring knife to carve the section deeper into the orange.
Next, use your spoon to scrape out the section you have carved so that the tealight can fit all the way in so that the lip of the tealight is just slightly above the edge in the orange. Remove the tealight.
Now you can begin creating your pattern. To do so, take a bamboo skewer and use the tip to puncher the skin of the orange, you only need to push the skewer in enough so that the clove will fit. You can choose to create shapes such as stars and hearts or you can make patterns.
Once your pattern is complete or once you have completed a section, you can begin to push the cloves into the holes you created with the skewer. Continue until you have completed your design and all holes have been filled with a clove. Place the tealight back into the space you carved out and that's it! Now you can move on to the next orange.
Place your pomanders on a small plate, or a bunch of them on a tray. Light, and enjoy.