sadly not just anyone can see it :/ i don't know of a way that you can develop the ability, but its just like any other ability. Some people can draw, some can't. Some people can see auras, some can't. But since it is an ability or skill, then maybe it can be worked on just like art can.
not just anybody can see a person aura it is a gift for me it's more of a feeling when I'm around people I get different vibes from them its kinda hard to explain you just get a certain feeling I have seen auras before though some people have very dark auras and some are very bright and yet others are just neutral your mind your heart just have to be open and receptive don't push yourself to see or feel these things it should come naturally