The preposition, like its namesake, is placed before its noun phrase. Sometimes it is written with an apostrophe between it and its noun phrase, sometimes it isn’t, and is left on its own. I find that leaving it on its own is better when dealing with a complex noun phrase.
Preposition’Noun-phrase Preposition Noun-phrase
Anara nel belore - By the power of the sun Ashal’anore – on behalf of kin Do Sin'dorei – to the Sin’dorei Da’shan're – for my honor
Prepositional phrases can be used to modify the meanings of nouns, a bit like adjectives do. When you wish to do this, simply put the noun first, then the prepositional phrase, like so:
Selama amor anore - Justice from kin Selama am oronor - Justice from comrades Felomin anar endal’re – Flame by my breath Melorn do menoor – A strike at the coward