On a motorcycle, typically the clutch would be on that side. The front brake is usually on the right-hand lever, and the rear brake is under the right foot. You can also slow down by engine braking.
awesome entry. I think the sword went to the right person. Actually I am really surprised that it came down to your model and that nurgle lord. Sure, the nurgle lord had a ton of details... but overall it's pretty uninspiring. It looks like every other nurgle lord that came before except some parts of it stand out as poorly made. For example, that banner looks very flat and thick - neither cloth-like nor aesthetically pleasing. Also, the pattern on the back suggests that the painter didn't know what to paint there, so he just painted a random pattern for the sake of adding freehand.
The chaos terminator that won silver is also a bad figure IMO. Why is the chaos terminator carrying an ultramarine on his back like that? Why is there an octopus coming out of the chaos marine's butt? It's a bad conversion... just look at the invisible bolter that the ultramarine has in his right hand. Why the judges gave this a silver over that meticulously painted sanguinior is beyond me.