How to knot your tie?

So you're walking along, late for a dinner where you need to be dressed to the nines and you still haven't tied your tie. In your flustered state you can't remember how to tie it, doh, what to do. Well if you are lucky enough to be in Reykjavik, Iceland you can stop at this alley entrance for instructions. Now this is a cool sign / wall art. As well as being helpful.