Hasta La Motion!

I need some of your help there ! I’m working on my first matte projection now, (so be easy on me please ^^), and I encouter some issue that I’m not really happy with : /
I watched some video, and read some stuff to tried to get help, but I can make it work.

First thing : I try to add a "fog" effect, using the depth matte coming from my scanLine render, but I think I must miss something because the depth chanel doesn’t mak my "fog" at all : /

Second thing : I added a displace on the roof of my first plan. I wanted to have this roof become more flat as my camera go down. But it doesn’t work at all 🙁
Maybe should I make more plan of it ?

You can see the first video movement without "fog" here : http://www.stevemorel.com/nuke/dockStore_0001.mov

You can see the video with the "fog" here : http://www.stevemorel.com/nuke/dockStore_0002.mov

You can download the zip with the nuke script / psd here > http://www.stevemorel.com/nuke/dockStore_issue.zip

I think the camera movement may be a bit too big, and I should reduce it. I’ll try to add some smoke, and make a bit of grading on this too. Of course, if you have any tips, to improve my script or the render of the composition, it’s really welcome !!

Hope to hear from you !
Cheer !