pin, down from the one in the wall. This pin is the top of your most left frame. Hold the said frame in postion against the wall and using a small spirit level sitting on top of the frame, resting the top edge no higher than its top pin and the frames' left edge no further left than the group's left pin - with this position 3 correct and the level saying 'level', gently press 4 the frame against the wall so its eyescrews do their thing. Mark off the indentations left by the eyescrews with another two pins 5 (or you can use the ones already in the wall indicating the frames' top and left edges) then install picture hooks atop of pins. Fit frame onto hooks - Voila - all the hard work has been done. Now all that is needed is to hang each adjacent frame in relation to the previous one by repeating the 5 steps; 'measure - plot - position - press - pin' and once you've nailed in the hooks, install the frame. Each time a frame has been installed, sit the spirit level back ontop of frame and check to see if the frame is 'plumb'. Minor corrections are possible by bending the respective eyescrew affixed to the reverse of the picture. Try not to mess with the hooks in the wall. The wrong thing to do would be to try correcting the level of the frame by pressing down on one side