Hanging on a nail the picture or mirror will make a mistake with the calculation of the length of the rope loop: it would be necessary to tighten or release, and everything is tied. In this case, help out a small plate with three holes. It can be made of metal, plywood, plastics — depending on the gravity of the suspended frame. Skipping rope end through two adjacent holes m the second stud on the frame, tie its end to the plate; such a “knot” will allow you to adjust the length, and the tense position holds, like the sea.