Berceuse - Worked on dynamics, breaths, caesuras, and tenuto on 3rd page. Oops, excuse me. Caesurae. I think I've got it how I want it, for the most part. I think muffling completely would be too jarring.

I moved a couple pedal changes because they are right in the middle of a quiet part. 

Need to work on the A♭ G♮ pedal change - it's really loud!

Railroad tracks

Thanks to one of the lovely members of yahoo's harplist, I now know the the double slash (\\) marking in Berceuse is a caesura.
Caesura - (/siːˈʒjʊərə/ or /sɪˈʒʊrə/; alternative spellings are cæsura and cesura) is a complete pause in a line of poetry or in a musical composition. In musical notation, caesura denotes a brief, silent pause, during which metrical time is not counted. --from Wikipedia.

Next is to figure out if I want it to be a L.V. pause or a muffled pause.

A couple definitions I missed

Senza misura - an Italian musical term for "without meter", meaning to play without a beat, using time to measure how long it will take to play the bar. (wikipedia)
Ten. (Tenuto) - Italian, past participle of tenere, "to hold". The precise meaning of tenuto is contextual: it can mean either hold the note in question its full length (or longer, with slight rubato), or play the note slightly louder. In other words, the tenuto mark may alter either the dynamics or the duration of a note. Either way, the marking indicates that a note should receive emphasis. (Tom Gerou and Linda Lusk, Essential Dictionary of Music Notation (1996))