How to Use this
So, if you have Sun in Aries, then you can touch the first part of your index finger of your right hand with the thumb of your right hand, whilst you chant your personal, Surya mantra.

Similarly, based on the other planets' positions in your birth chart and their reflecting position on your fingers, you can touch the appropriate part of the finger with the thumb of your right hand, to honor, align with and worship that particular planet. You can do this through mudras, breath work and chanting.

For maximum results, you can also worship the deities connected to the planets in your birth chart, by chanting or meditating upon them during the Vara and Hora of the planet.

To go into more detail, you can also use the mantra of the planet based on your Nakshatra pada. Say, for example, Sun is in Ashwini pada 2, then you will use the 2nd mantra out of the 108 mantras for the Sun.

Acknowledgment to Pandit Sanjay Rath for sharing this wisdom.