Well..
I'm not really a composer, but I been following your music and examined this one. What I say is what you should do for the second part is speed up the tempo of very slightly and drums enter more so on and the choir of the dark voices make a harmoney with the tempo and possibly a piano or some bells in the background with violin going doing the same melody as the bells later on in it but at a deeper tone. Thats what I think. I hope that helps.