My main tool to my spell was a communication and confidence talisman that I made. I cast the spell on a Wednesday with the waxing moon in Leo on the hour of Mercury just after I made the talisman.
This is the main incantation that I made: I'm not a writer so it might not be very good but it seemed to have worked as I managed to do a presentation (the bane of my existence) at uni without many faults

Anyway, here's the spell. I hope you like it and feel free to comment or gave suggestions on if any.
"Oh! Dear God and Goddess, I call to thee
Please listen now and hear thy plea.
In the light of the waxing moon
I do hope for courage soon.
In the influence of Mercury's glow,
Let thy speak fluently so.
Lower thy barrier of voice I plea,
This is my wish upon to thee.
Element of fire, so courageous and bright,
Element of air, so refreshing and light,
I ask of thee to lend your courage and voice,
So I may communicate, this is my choice.
Now with my fire burning with might,
And with my voice so loud and bright.
I give thanks to all of thee,
And as my will, so mote it be."