Pick a point, and work around the plane from there. Don't go "Engine, tail, wings, etc", but rather start at, say, the left wing. Check the wing, the aileron servo, the aileron...then start moving to the back of the plane...check the left side of the fuse for cracks/etc, work toward the left stabilizer, left elevator half, rudder and vert stab, etc. Basically, think of it as a clock...start at an "hour" of your choosing, and then work your way around in a circle...
Sage advice, sir. This is what full scale pilots do, and also happens to be exactly how I preflight my models.
Here's a page from the checklist of a full scale aircraft. Whenever I fly the Bonanza, I perform the walkaround check. It starts in the cockpit and ends at the trailing edge of the right wing:
