Luckily, none of these collectibles are missable. After completing the episode, you will unlock Collector Mode which allows you to go back through the episode, selecting specific chapters to revisit.
Graffiti Locations:
#1 - 0:24
#2 - 0:24
#3 - 1:29
#4 - 2:15
#5 - 2:51
#6 - 4:30
#7 - 4:30
#8 - 5:59
#9 - 7:19 #10 - 8:03
Here is a video guide with English commentary!
Here is a playlist of guides for this game!
https://www.youtube.com/playlist?list=PL-HeW6XkKdUJh52cWo1wp...