Still looking at #41, but many people see only the cube, not the door. From the reader's perspective, you would b standing in the shadow to open the door, with nothing on the other side. Parhaps if we moved the door to the end of the word, wiith the shadow to the right.
Sorry about not answering your other concepts. It just didn't strike anyone. Got you confused with a couple of your countrymen who are knocking off yours' and others' concepts as soon as I put my comments up.