I have just made a repair guide, https://www.ifixit.com/Guide/Fix+False+P.... I created some disassembly guides and set them as prerequisites.
One thing my repair guide is missing is some steps and pictures at the start to demonstrate if this repair is indicated. All I can do is put text instructions in the introduction, but this isn't as helpful as a picture showing (in this case) the location of the lever whose movements indicate this problem.
Is there a way to put one or more steps before the steps from the prerequisite guides? If not, could you consider this as a feature for a future version of Dozuki/iFixit?
I did think of a work-around, that I have used - create a guide that contains just the 'determine if you need to do this' step, and add it as the first prerequisite. As it doesn't make sense outside of the full guide, I have left it private.