If you don’t comprehend signals, it’s quite possible that everyone else is signalling (and thus signalling can be determined from their pictures) but you are not (and thus it can’t be determined from yours). So looking at your own pictures isn’t going to demonstrate anything useful.
If you don’t comprehend signals, it’s quite possible that everyone else is signalling (and thus signalling can be determined from their pictures) but you are not (and thus it can’t be determined from yours). So looking at your own pictures isn’t going to demonstrate anything useful.