Hi love. There's a lot of things you can use to help you figure out if you are a vessel, but none of those have anything to do with it. There's many things it could be besides an angel though for example your soul can simply be young. If you truly feel you are a vessel though the best thing to do to figure it out is to take a moment to yourself in the calm and silence and meditate on it. My fiance may be of better help with how you can figure things out, but you're welcome to talk to us anytime about any of it. Oh and he's on here as Azrael.