This trophy is earned for finding optional photo #8. If missed on the first run, you can "Play Episodes" and select specific parts of the Episode in order to find the missing optional photos through collectibles mode. The following collectible is described and can be seen below:
[
4:26] - Optional Photo #8
Once you make it to the parking lot, you'll notice a large RV on the right side. Walk up to it and interact with the dirty window. After drawing on it, you can take a photo.
Collecting all 10 photos will also reward you with the following achievement:
https://www.trueachievements.com/a197670/visionary-achi....htm