This confusion (the photo could be of ANYTHING) is one of the main reasons I post so many drawings. Even if I have the object sitting right in front of me, and a camera at my fingertips, I will usually take the time and effort to do a drawing rather than just click a picture.
If you will notice, I shorten the length of "studs" in a drawing so that you can see the ends, and tell the orientation and relative sizes of pieces.
Most DIY people either cram a camera up so close, all you can see is a distorted blur of brown, or hold it so far away that all you can tell is that there is a wall somewhere in the photo. And, worse, they use that danged cheap glass hole on the back of their cell phone that someone sold them as being a true camera.
There's a good reason plans are DRAWINGS, and not photographs.