How do you make sure these are down well? I have an unger pole which stretches to 6 metres. Shall I just drag down my 14inch blade? And for the small windows above these big ones, use a 6 incher and drag it side ways? Then the detailing? I cant see how well I am doing it as it is metres above me, but is there any trick to all this and the detailing? Just stick a scrim on the top?