By allah Saca, I'm impressed. Excellent thread, posts and training aids. Outstanding. Here's your Senior Medic's Smiley Face for your class -
The way I was taught to do it is lift the skin, cut and blunt dissect with forceps. Make entrance with the forceps, not a blade and open the forceps to make way for the hose. I think there is less chance of cutting the aforementioned veins this way.
Aspiring medics - anatomy is important.
swatsurgeon - the "abandon because of bleeding" - I don't get this. I find it incredible that anyone trained would make an incision, then not go on to establish an airway for any reason.