This video goes into (a little bit too much) detail about how to annotate your artwork
amazing info and guides with examples : https://www.studentartguide.com/
0:00 intro
2:35 point 1
5:05 point 2
8:35 point 3
13:40 point 4
14:38 point 5
15:42 point 6
17:31 bye bye