Thanks for the offer but I'll take care of the screens. It all needs to be done on the same system and in the exact same manner for consistency. For that, it's ideal for one person to handle them all. Once I pick my spots out, and if your system is set up in the exact same manner, then I can share the saves and have you help.
The shots will be taken from a STEP Core or Extended installation. That shouldn't matter in the end because no one is going to be playing on an unmodded Skyrim. I'm thinking STEP:Core would be better since it's closer to vanilla.
For the [EFFECTS] section, I'm planning on using an ENB Preset (probably Vividian Vanilla). Since the out-of-the-box preset from ENB Dev isn't set up for the best compare for actual effects by default, I think it would be best to use an author's Preset to get the biggest visual difference with them on and off in this section. For the rest of the sections, I was planning on using the default Preset from ENB Dev as JawZ and Aiyen mentioned. It's best to use the default preset because that is what most authors should be using as a base when they start editing to build their own preset. Anyone who starts from scratch will see the same thing on their monitors that will be in the shots on the Guide because vanilla is the foundation. The only acceptation to this would be if the author created and changed their shaders first. (I don't know which is the more common path to take...change enbseries.ini first or change your shaders first?) If it's more common to change shaders before editing the INI, then I wouldn't be against using an already made Preset like Vividian Vanilla.
MTichenor is great at what he does. I used to use SkyRealism and was a heavy supporter of it in the past; however, his presets are fairly out-dated and he doesn't seem to have much interest in updating them because he doesn't see much use in the new effects or simply doesn't have the time. We would need a preset that is updated to the latest version of ENBSeries; v0.264, in order to properly finish the Guide with a preset rather than the out-of-the-box ENB.
I agree with JawZ and Aiyen on this one.