Could be prettier, but when the lights are out (which they pretty much always are in the theater) who cares. You can see the piece of velvet pinned to the ceiling to block light spillage from the front vent. I used to "manage my cables", but I take the projector down several times a summer for outdoor movies and just gave up.
I built a shelf on my rear wall, then built the mount to allow the projector to lay upside down.
Having two pieces allows me to slide the mount around on the shelf to position the lens dead center.
It also allows me to shim the front of the mount to raise the image slightly when I zoom out for wide screen movies.
I see one of my old posts was recently quoted. The W1070 does not have enough zoom range for a 2.35 scope format screen, however for my constant area 2.0 ratio screen it works just great. Full zoom (biggest picture) for scope movies, and just shy of minimum zoom (smallest picture) for 16:9. I still make the change every time the picture format changes. 30 seconds of work is worth 2 hours of watching the best presentation possible, at least to me.
Here you can see access for zooming and focus
I hope this gives you some idea. Not difficult. The measurements don't have to be exact. It will become obvious once you lay your projector on it whether something needs a tweak or not.
If you have any questions just PM me. I don't hang out in the W1070 thread anymore.
Most everything about the projector itself has been asked and answered a million times. (1.5+ million posts - WOW!!!)