This part was by far probably my favorite to make (even up through parts 10). I really feel like the idea I came up for this one was really good and clever. Unfortunately not as many people as I would have expected know about the hidden Skull Kid texture in Termina Field. There is a second copy of the "drawing" on the tree from when Tatl remembers meeting Skull Kid. This copy is very large and colored green so that it blends into the grass. It can pretty easily be seen from the telescope in the observatory. It is located in between the south and east entrances of Clock Town. There is even the giant guay that can be activated from the telescope that will then drop a red rupee on it.
Another thing are the features of Termina Field when viewing from the Observatory telescope. In place of the grottos are copies of the Ocean Spider House guy. He signifies that it is a point of interest. I added another one of these over the new grotto at it's location. I, however, strategically placed him such that only one of his arms is actually visible. This makes him not very noticeable and easy to miss as the clues are meant for the player to look for the Skull Kid texture. Which ultimately will lead the player to notice him.