A couple of teething problems need to be sorted out still, such as the stylesheet for the video description links and the permalinks for single page playlists.

So here’s the embedded video which show you how to superimpose part of one photograph on top of another, adjusting the transparency to suitable effect.

If you want to make use of the pictures used in the example then head over to the post on Andy Roberts blog entitled:
how-to-photograph-a-ghost