|Couple of tips that might have helped in this pic obviously taken in difficult light circumstances:
Remember to try to use manual focus and not too much of a narrow DOF. From where you are going to sit, focus on the tripod head, then lock focus. Place camera on the tripod head and set up the timer.
Also, try to straighten your horizon before posting. Although, seeing as you are in Iraq, I couldn't say for sure that you even had access to your own personal computer. This could have been done using unfamiliar software.
It looks like you definitely got your lines right.
Canon cameras have recently started coming out with a feature called an Intervalometer. It allows you to tell the camera to take pictures at a certain interval. If you felt like it, you could set up to take 5 or 6 shots in a row at 1 minute (or less if this is possible on the 5D) intervals allowing you to make a few attempts at being reallly reallly still.
An aperture of f5.6-8 at an ISO of 1000 or even better could possibly have helped make things a bit easier to handle, placing the greatest difficulty on remaining still for around 2-3 seconds.
Hope its a bit helpful. Your profile indicates you have some pretty serious equipment, so it's just as possible that you know all of this and just didn't have time to muck about.