What`s the secret?

I`ve been doing the job I`m useless at this afternoon. Well, there`s a lot of things I`m useless at, and this is one of them. No matter how hard I try, what materials I use to do it with, I`m never satisfied with the result.

I`ve tried all kinds of spray cleaning liquids, different cloths, washleather, kitchen roll, microfibre cloth and water, but all with the same result – streaky or smeary windows and mirrors.

Is there a knack to it? Or a secret to how to get nice shiny clean windows?