Ooookay... First poem of mine!!!

But I don't consider it to be my best. Your comments...? And help with the third verse!
Elven Light
A vial crystal shining bright
Even through the darkest night
A promise filled with perfect might
A gift of sovereigns: Elven Light
Was it mean and menial
The gift that from Galadriel
Bestowed on Frodo meaning well
Would lead him through the darkness fell?
The light bestowed from Earendil
The vial crystal it did fill
The light no evil dark can kill
And no hardship can make it nil
Sing now, to that lovely star
That shines on us from afar
That no evildoer can ever mar
That led the Ring and Frodo far
By Dunadariel Lone adn Wandering