*Finding a tiny white feather. This indicates that you are on the right path. A door has opened for you in your life, and you have chosen to walk through. In accordance with the Universal Law of Three, you may well find two more.
**A sudden fragrance under your nose. If you suddenly smell a fragrance which seems to come and go, and it's nothing to do with your own perfume or body spray, or your surroundings, it's likely to be your guardian angel signifying approval for what you are doing. You'll probably continue to smell the same fragrance from time to time, perhaps when you are talking to your angel or in the same part of your house.
***A bright light or color within your mind. You've closed your eyes and asked for angelic help. You recieve a sudden flash of illumination within your mind. It may momentarily fill your mind with light, or may pass across your inner vision like a shooting star. It can also be a pulsing shape or color (often gold or purple). All these manifestations mean that your plea has been heard.
****Tingling in the air. Hold your hand our in front of you or above your head after a short meditation in which you have asked angels for their support. You will feel a tingling against your hand, like a gentle electric current--angels are around you. If you then call in another angel, the tingling will increase or change in nature. If at first you dont feel anything, keep trying, and after a while you will begin to sense the energy. You may also ssee tiny points of light in your peripheral vision.
*****A feeling of loving warmth. Often when you have invoked an angel with a feeling of love and trust, in response you will feel filled with warmth, comfort, or peace. This is particularly noticeable as heat in the palms of your hands or around your heart. It may be a wave of love pouring through you before ebbing away.
This was taken from the book A Harmony of Angels