yes mate I have one tip, if you have been employed at rubbish rates you will have been taught bad habits, so don't do any of them. and you are right last year I was talking to a guy that was canvassing in Falkirk and he was from ayr, what is that all about

But on a serious note do all the other window cleaners just do the glass, miss doors, skip the odd frosted window, you get the picture, well when canvassing promise not to do any of that and price higher than them and do frames, sills and detail round the window, but make sure you are charging more than the going rate.
apart from that good luck

if you need to ask more specific questions ask away