Aser that one is brilliant and will appear on the flight school wall very soon.
I think these posters are much more effective at transferring safety information than we realise. I can still remember and act according to the posters on crew room walls from my days as an Air Cadet 40 years ago.
Like the old Air Clues one of a Wing Co pontificating to a pilot officer saying, "Don't assume, check". His flies are undone in the cartoon. I still use that phrase when I am about to be lazy and assume something has been done...
These suckers work.