How to write your name in elvish in 10 minutes

My name has a "TH" in it but does not follow the pronunciation of TH, as in the T is pronounced Tea, and the H is silent. Do we think this means I should separate the TH or not? Does pronunciation impact the written word of it?

@Dr_Richard_ew
Write Dick in evilish

Is this in Tolkien's elvish? Which brand of elvish?