I agree, sometimes even the simplest of tasks can be incredibly hard to describe for another to follow.
The last IKEA item I did was completely image driven, no writing but clear drawings of where each or the fixings needed to be.
I have had some horrible instructions too, impenetrable or incomplete. Or expecting lots from to builder. I recently built a model tank from a well known manufacturer. Every hole in the hull was accounted for, except one on each side plate which I wrote to the company about. Erm, that's a rain water drainage hole on the real tank, not meant for any fixings to go in. Oops did I feel daft?
Regards Mick