Hi Dave,
Firstly, make sure you have all the equipment ready.
My main change would be pricing, its easy to get into the desperate canvassing syndrome and start to price cheaply just to get the business when you first start out.
Set out your hourly rate and stick to it, you will find the work out there and this will save you having to put the prices up later on or just eventually binning them.
Smart literature, take time to develope the right canvassing leaflet.
NEVER deliberately undercut another w/c.
Good luck and best wishes,
Trev