BUT, I am still having a hard time sexing my panda cories. Trying to get their top view is next to impossible... Generally, females are a little larger than males, so if your cories are fully mature (hit the maximum size) then you may be able to tell by observing their sizes.
It's easier to tell sexes between cories when they're adults. When cories are juvies its difficult to sex since it depends alot on the final body width and size. The broader, bigger cory is often the female and the males will be smaller in size and width, along with their dorsal fin being taller and more pointed. I will try to get a picture of both the sexes later for you.
My cories are at least 16 months old (I assume they are fully mature now) and I still cannot tell their sex... Sometimes, all 4 of them are sitting side by side so I get a good look at them and compare their size and I sware they are all about the same size... May be I didn't try hard enough...