This was just an idea that came to mind when I wanted to do a Dwarf-Elf friendship story besides with Legolas and Gimli.
Disclaimer: I do not own the Silmarillion or any of its rights or characters, I just write for fun.
What was to be done about this dilemma of building the West-gate of Khazad-dûm? Narvi, a skilled Dwarf who lived there had fashioned the doors of the gate out of grey stone that was much stronger than ordinary stone, but he wanted them to have some sort of magical quality about them, something that would mark the friendship of the Dwarves of Khazad-dûm and the Elves of Eregion forever, but how was that to be done? He did not have any special magical abilities about him, though he was a good carver.
Just then, up walked Celebrimbor, the Elven Lord of Eregion. Narvi told him about what he desired to do with the doors of the West-gate. Celebrimbor started to make carvings on the doors, Ithilden carvings that could be seen only in starlight and moonlight. He said he wanted to show a kinship between the Elves and Dwarves in it, just like Narvi also wanted. To represent the Elves, he inlaid two trees surmounted by crescent moons, and a star that was the emblem of the House of Fëanor. Then, to represent the Dwarves, he inlaid a hammer and anvil, and a crown with seven stars, all emblems of Durin and his folk. Finally, Narvi recited to Celebrimbor a few sentences he wanted the doors to have engraved on them.
"Ennyn Durin Aran Moria. Pedo mellon a Minno. Im Narvi hain echant. Celebrimbor o Eregion tethant. I thiw hin." This translated as, "The Doors of Durin, Lord of Moria. Speak, friend, and enter. I, Narvi, made them. Celebrimbor of Hollin drew these signs."
When this was all finished, Narvi and Celebrimbor stepped back and looked at their work in the moonlight, and they both smiled. Narvi declared that these doors would stand wide open as long as the partnership between Dwarves and Elves lasted, but they would always bear these signs in honor of Celebrimbor and Narvi's handiwork, where they worked together as a team to make something of great beauty. Celebrimbor then turned to Narvi and declared the Dwarf an Elf-friend, his friend, to be more specific, and that in life and death, they would always be together in heart.
Narvi bowed reverentially to the Elf-smith, and Celebrimbor bowed in return, and after giving each other a blessing, they each walked back to their own people to deliver the good news of a new camaraderie between the Quendi and the Khazâd.
Tolkien believed that he had not devised his magnificent mythical world so much as he had found it-indeed, that it had been revealed to him by God. Once when asked what a certain passage in The Lord of the Rings meant, he replied: "I don't know; I'll try to find out." "Always I had the sense," he declared, "of recording what was already 'there,' somewhere: not of 'inventing'". The tales arose in his mind, he confessed, "as 'given' things, and as they came, so too the links grew." Tolkien thus came to regard his characters and their realm not as fictional but as historical persons and places! Venice, he confessed, was like "a dream of old Gondor." - excerpt from The Gospel According To Tolkien
Because of my love for fantasy, science fiction, and an unseen world that can be better (and happier) than the stoic real world, I agree with J.R.R. Tolkien; if you believe in God, then He will give you inspiration and knowledge to write fanfics or other stories that are just as real and maybe even historical to you as Tolkien's stories were to him.